1002 CAPÍTULO 14 Integración múltiple37. primer octante38. primer octante39. primer octante40.En los ejercicios 41 a 46, establecer una integral doble paraencontrar el volumen de una región sólida limitada por las gráficasde las ecuaciones. No evaluar la integral.41. 42.43.44.En los ejercicios 47 a 50, utilizar un sistema algebraico por computadoray hallar el volumen del sólido limitado o acotado por lasgráficas de las ecuaciones.47.48. primer octante49.50.51. Si es una función continua tal que en unaregión R de área 1, demostrar que52. Hallar el volumen del sólido que se encuentra en el primeroctante, acotado por los planos coordenados y el planodondeyEn los ejercicios 53 a 58, trazar la región de integración. Despuésevaluar la integral iterada y, si es necesario, cambiar el orden deintegración.53. 54.57.Valor promedioEn los ejercicios 59 a 64, encontrar el valorpromedio de f (x, y) sobre la región R.59.rectángulo con vértices60. f(x, y) 2xyrectángulo con vértices (0, 0), (5, 0), (5, 3), (0, 3)61.cuadrado con vértices62.R: triángulo con vértices (0, 0), (1, 0), (1, 1)63.R: triángulo con vértices (0, 0), (0, 1), (1, 1)64.R: rectángulo con vértices (0, 0), (, 0),(, ), (0, )65. Producción promedio La función de producción Cobb-Douglaspara un fabricante de automóviles esdonde x es el número de unidades de trabajo y y es el número deunidades de capital. Estimar el nivel promedio de producción siel número x de unidades de trabajo varía entre 200 y 250 y elnúmero y de unidades de capital varía entre 300 y 325.66. Temperatura promedio La temperatura en grados Celsiussobre la superficie de una placa metálica es T(x, y) 20 4x 2 y 2 , donde x y y están medidas en centímetros. Estimar la temperaturapromedio si x varía entre 0 y 2 centímetros y y varíaentre 0 y 4 centímetros.f x, y 100x 0.6 y 0.437. first octant38. first octant39. first octant40.In Exercises 41–46, set up a double integral to find the volumeof the solid region bounded by the graphs of the equations. Donot evaluate the integral.41. 42.43.44.45.46.In Exercises 47–50, use a computer algebra system to find thevolume of the solid bounded by the graphs of the equations.47.48. first octant49.50.51. If is a continuous function such that over aregionof area 1, prove that52. Find the volume of the solid in the first octant bounded by thecoordinate planes and the planewhereandIn Exercises 53–58, sketch the region of integration. Thenevaluate the iterated integral, switching the order of integrationif necessary.53. 54.55. 56.57.58.Average ValueIn Exercises 59– 64, find the average value ofover the region59.rectangle with vertices60.rectangle with vertices61.square with vertices62.triangle with vertices63.triangle with vertices64.rectangle with vertices65. Average Production The Cobb-Douglas production functionfor an automobile manufacturer iswhereis the number of units of labor and is the number of units ofcapital. Estimate the average production level if the number ofunits of labor varies between 200 and 250 and the number ofunits of capital varies between 300 and 325.66. Average Temperature The temperature in degrees Celsius onthe surface of a metal plate iswhereandare measured in centimeters. Estimate the averagetemperature if varies between 0 and 2 centimeters and variesbetween 0 and 4 centimeters.yxyxTx, y 20 4x 2 y 2 ,yxyxfx, y 100x 0.6 y 0.4 ,0, 0 , , 0 , , , 0,R:f x, y sen x y0, 0 , 0, 1 , 1, 1R:fx, y e x y 0, 0 , 1, 0 , 1, 1R:fx, y1xy0, 0 , 2, 0 , 2, 2 , 0, 2R:fx, y x 2 y 2 0, 0 , 5, 0 , 5, 3 , 0, 3R:fx, y2xy0, 0 , 4, 0 , 4, 2 , 0, 2R:f x, yxR.f x, y20212x 2y cos y dy dx10arccos y0sin x 1 sin 2 x dx dy301y 311 x 4 dx dy224 x 24 x 2 4 y 2 dy dxln 10010e x 1ln y dy dx1012y 2e x2 dx dyc > 0.b > 0,a > 0,xa yb zc 1,0 R f x, y dA 1.R0 fx, y 1fz ln 1 x y , z 0, y 0, x 0, x 4 yz21 x 2 y 2, z 0, y 0, x 0, y 0.5x 1x 2 9 y, z 2 9 y,z 9 x 2 y 2 , z 0z x 2 y 2 , z 18 x 2 y 2z x 2 2y 2 , z 4yz sin 2 x, z 0, 0 x , 0 y 5z x 2 y 2 , x 2 y 2 4, z 0z = 2xyx42−2−2121zz = x 2 + y 2z = 4 − x 2 − y 2z = 4 − 2xyx422zz11 y 2, x 0, x 2, y 0z x y, x 2 y 2 4,y 4 x 2 , z 4 x 2 ,x 2 z 2 1, y 2 z 2 1,1002 Chapter 14 Multiple IntegrationCAS67. State the definition of a double integral. If the integrand isa nonnegative function over the region of integration, givethe geometric interpretation of a double integral.68. Let be a region in the plane whose area is Iffor every point in what is the value ofExplain.69. Let represent a county in the northern part of the UnitedStates, and letrepresent the total annual snowfall atthe point in Interpret each of the following.(a)(b)70. Identify the expression that is invalid. Explain yourreasoning.a) b)c) d)71. Let the plane region be a unit circle and let the maximumvalue of on be 6. Is the greatest possible value ofequal to 6? Why or why not? If not, whatis the greatest possible value?Rfx, y dy dx RfR20x0fx, y dy dx203xfx, y dy dx20y0fx, y dy dx2030fx, y dy dxRfx, y dARdARfx, y dAR.x, yfx, yRR fx, y dA? R,x, yf x, ykB.xy-RWRITING ABOUT CONCEPTS37. first octant38. first octant39. first octant40.In Exercises 41–46, set up a double integral to find the volumeof the solid region bounded by the graphs of the equations. Donot evaluate the integral.41. 42.43.44.45.46.In Exercises 47–50, use a computer algebra system to find thevolume of the solid bounded by the graphs of the equations.47.48. first octant49.50.51. If is a continuous function such that over aregionof area 1, prove that52. Find the volume of the solid in the first octant bounded by thecoordinate planes and the planewhereandIn Exercises 53–58, sketch the region of integration. Thenevaluate the iterated integral, switching the order of integrationif necessary.53. 54.55. 56.57.58.Average ValueIn Exercises 59– 64, find the average value ofover the region59.rectangle with vertices60.rectangle with vertices61.square with vertices62.triangle with vertices63.triangle with vertices64.rectangle with vertices65. Average Production The Cobb-Douglas production functionfor an automobile manufacturer iswhereis the number of units of labor and is the number of units ofcapital. Estimate the average production level if the number ofunits of labor varies between 200 and 250 and the number ofunits of capital varies between 300 and 325.66. Average Temperature The temperature in degrees Celsius onthe surface of a metal plate iswhereandare measured in centimeters. Estimate the averagetemperature if varies between 0 and 2 centimeters and variesbetween 0 and 4 centimeters.yxyxTx, y 20 4x 2 y 2 ,yxyxfx, y 100x 0.6 y 0.4 ,0, 0 , , 0 , , , 0,R:fx, y sen x y0, 0 , 0, 1 , 1, 1R:f x, y e x y 0, 0 , 1, 0 , 1, 1R:fx, y1xy0, 0 , 2, 0 , 2, 2 , 0, 2R:fx, y x 2 y 2 0, 0 , 5, 0 , 5, 3 , 0, 3R:fx, y2xy0, 0 , 4, 0 , 4, 2 , 0, 2R:fx, yxR.f x, y20212x 2y cos y dy dx10arccos y0sin x 1 sin 2 x dx dy301y 311 x 4 dx dy224 x 24 x 2 4 y 2 dy dxln 10010e x 1ln y dy dx1012y 2e x2 dx dyc > 0.b > 0,a > 0,xa yb zc 1,0 R f x, y dA 1.R0 fx, y 1fz ln 1 x y , z 0, y 0, x 0, x 4 yz21 x 2 y 2, z 0, y 0, x 0, y 0.5x 1x 2 9 y, z 2 9 y,z 9 x 2 y 2 , z 0z x 2 y 2 , z 18 x 2 y 2z x 2 2y 2 , z 4yz sin 2 x, z 0, 0 x , 0 y 5z x 2 y 2 , x 2 y 2 4, z 0z = 2xyx42−2−2121zz = x 2 + y 2z = 4 − x 2 − y 2z = 4 − 2xyx422zz11 y 2, x 0, x 2, y 0z x y, x 2 y 2 4,y 4 x 2 , z 4 x 2 ,x 2 z 2 1, y 2 z 2 1,1002 Chapter 14 Multiple IntegrationCAS67. State the definition of a double integral. If the integrand isa nonnegative function over the region of integration, givethe geometric interpretation of a double integral.68. Let be a region in the plane whose area is Iffor every point in what is the value ofExplain.69. Let represent a county in the northern part of the UnitedStates, and letrepresent the total annual snowfall atthe point in Interpret each of the following.(a)(b)70. Identify the expression that is invalid. Explain yourreasoning.a) b)c) d)71. Let the plane region be a unit circle and let the maximumvalue of on be 6. Is the greatest possible value ofequal to 6? Why or why not? If not, whatis the greatest possible value?Rfx, y dy dx RfR20x0fx, y dy dx203xfx, y dy dx20y0fx, y dy dx2030fx, y dy dxRfx, y dARdARfx, y dAR.x, yfx, yRR fx, y dA? R,x, yf x, ykB.xy-RWRITING ABOUT CONCEPTS37. first octant38. first octant39. first octant40.In Exercises 41–46, set up a double integral to find the volumeof the solid region bounded by the graphs of the equations. Donot evaluate the integral.41. 42.43.44.45.46.In Exercises 47–50, use a computer algebra system to find thevolume of the solid bounded by the graphs of the equations.47.48. first octant49.50.51. If is a continuous function such that over aregionof area 1, prove that52. Find the volume of the solid in the first octant bounded by thecoordinate planes and the planewhereandIn Exercises 53–58, sketch the region of integration. Thenevaluate the iterated integral, switching the order of integrationif necessary.53. 54.55. 56.57.58.Average ValueIn Exercises 59– 64, find the average value ofover the region59.rectangle with vertices60.rectangle with vertices61.square with vertices62.triangle with vertices63.triangle with vertices64.rectangle with vertices65. Average Production The Cobb-Douglas production functionfor an automobile manufacturer iswhereis the number of units of labor and is the number of units ofcapital. Estimate the average production level if the number ofunits of labor varies between 200 and 250 and the number ofunits of capital varies between 300 and 325.66. Average Temperature The temperature in degrees Celsius onthe surface of a metal plate iswhereandare measured in centimeters. Estimate the averagetemperature if varies between 0 and 2 centimeters and variesbetween 0 and 4 centimeters.yxyxTx, y 20 4x 2 y 2 ,yxyxfx, y 100x 0.6 y 0.4 ,0, 0 , , 0 , , , 0,R:fx, y sen x y0, 0 , 0, 1 , 1, 1R:fx, y e x y 0, 0 , 1, 0 , 1, 1R:f x, y1xy0, 0 , 2, 0 , 2, 2 , 0, 2R:f x, y x 2 y 2 0, 0 , 5, 0 , 5, 3 , 0, 3R:f x, y2xy0, 0 , 4, 0 , 4, 2 , 0, 2R:f x, yxR.f x, y20212x 2y cos y dy dx10arccos y0sin x 1 sin 2 x dx dy301y 311 x 4 dx dy224 x 24 x 2 4 y 2 dy dxln 10010e x 1ln y dy dx1012y 2e x2 dx dyc > 0.b > 0,a > 0,xa yb zc 1,0 R f x, y dA 1.R0 fx, y 1fz ln 1 x y , z 0, y 0, x 0, x 4 yz21 x 2 y 2, z 0, y 0, x 0, y 0.5x 1x 2 9 y, z 2 9 y,z 9 x 2 y 2 , z 0z x 2 y 2 , z 18 x 2 y 2z x 2 2y 2 , z 4yz sin 2 x, z 0, 0 x , 0 y 5z x 2 y 2 , x 2 y 2 4, z 0z = 2xyx42−2−2121zz = x 2 + y 2z = 4 − x 2 − y 2z = 4 − 2xyx422zz11 y 2, x 0, x 2, y 0z x y, x 2 y 2 4,y 4 x 2 , z 4 x 2 ,x 2 z 2 1, y 2 z 2 1,1002 Chapter 14 Multiple IntegrationCAS67. State the definition of a double integral. If the integrand isa nonnegative function over the region of integration, givethe geometric interpretation of a double integral.68. Let be a region in the plane whose area is Iffor every point in what is the value ofExplain.69. Let represent a county in the northern part of the UnitedStates, and letrepresent the total annual snowfall atthe point in Interpret each of the following.(a)(b)70. Identify the expression that is invalid. Explain yourreasoning.a) b)c) d)71. Let the plane region be a unit circle and let the maximumvalue of on be 6. Is the greatest possible value ofequal to 6? Why or why not? If not, whatis the greatest possible value?Rfx, y dy dx RfR20x0fx, y dy dx203xfx, y dy dx20y0fx, y dy dx2030fx, y dy dxRfx, y dARdARfx, y dAR.x, yfx, yRR fx, y dA? R,x, yf x, ykB.xy-RWRITING ABOUT CONCEPTS0, 0, 2, 0, 2, 2, 0, 2R:f x, y x 2 y 2R:0, 0, 4, 0, 4, 2, 0, 2R:f x, y x10arccos y0sin x1 sin 2 x dx dyln 100 10e x 1ln y dy dx1012y2e x2 dx dyc > 0.b > 0,a > 0,xa yb zc 1,0 ≤ R f x, y dA ≤ 1.0 ≤ f x, y ≤ 1fz ln1 x y, z 0, y 0, x 0, x 4 yz 21 x 2 y 2, z 0, y 0, x 0, y 0.5x 1x 2 9 y, z 2 9 y,z 9 x 2 y 2 , z 037. first octant38. first octant39. first octant40.In Exercises 41–46, set up a double integral to find the volumeof the solid region bounded by the graphs of the equations. Donot evaluate the integral.41. 42.43.44.45.46.In Exercises 47–50, use a computer algebra system to find thevolume of the solid bounded by the graphs of the equations.47.48. first octant49.50.51. If is a continuous function such that over aregionof area 1, prove that52. Find the volume of the solid in the first octant bounded by thecoordinate planes and the planewhereandIn Exercises 53–58, sketch the region of integration. Thenevaluate the iterated integral, switching the order of integrationif necessary.53. 54.55. 56.57.58.Average ValueIn Exercises 59– 64, find the average value ofover the region59.rectangle with vertices60.rectangle with vertices61.square with vertices62.triangle with vertices63.triangle with vertices64.rectangle with vertices65. Average Production The Cobb-Douglas production functionfor an automobile manufacturer iswhereis the number of units of labor and is the number of units ofcapital. Estimate the average production level if the number ofunits of labor varies between 200 and 250 and the number ofunits of capital varies between 300 and 325.66. Average Temperature The temperature in degrees Celsius onthe surface of a metal plate iswhereandare measured in centimeters. Estimate the averagetemperature if varies between 0 and 2 centimeters and variesbetween 0 and 4 centimeters.yxyxTx, y 20 4x 2 y 2 ,yxyxfx, y 100x 0.6 y 0.4 ,0, 0 , , 0 , , , 0,R:fx, y sen x y0, 0 , 0, 1 , 1, 1R:fx, y e x y 0, 0 , 1, 0 , 1, 1R:fx, y1xy0, 0 , 2, 0 , 2, 2 , 0, 2R:fx, y x 2 y 2 0, 0 , 5, 0 , 5, 3 , 0, 3R:fx, y2xy0, 0 , 4, 0 , 4, 2 , 0, 2R:fx, yxR.f x, y20212x 2y cos y dy dx10arccos y0sin x 1 sin 2 x dx dy301y 311 x 4 dx dy224 x 24 x 2 4 y 2 dy dxln 10010e x 1ln y dy dx1012y 2e x2 dx dyc > 0.b > 0,a > 0,xa yb zc 1,0 R f x, y dA 1.R0 fx, y 1fz ln 1 x y , z 0, y 0, x 0, x 4 yz21 x 2 y 2, z 0, y 0, x 0, y 0.5x 1x 2 9 y, z 2 9 y,z 9 x 2 y 2 , z 0z x 2 y 2 , z 18 x 2 y 2z x 2 2y 2 , z 4yz sin 2 x, z 0, 0 x , 0 y 5z x 2 y 2 , x 2 y 2 4, z 0z = 2xyx42−2−2121zz = x 2 + y 2z = 4 − x 2 − y 2z = 4 − 2xyx422zz11 y 2, x 0, x 2, y 0z x y, x 2 y 2 4,y 4 x 2 , z 4 x 2 ,x 2 z 2 1, y 2 z 2 1,1002 Chapter 14 Multiple IntegrationCAS67. State the definition of a double integral. If the integrand isa nonnegative function over the region of integration, givethe geometric interpretation of a double integral.68. Let be a region in the plane whose area is Iffor every point in what is the value ofExplain.69. Let represent a county in the northern part of the UnitedStates, and letrepresent the total annual snowfall atthe point in Interpret each of the following.(a)(b)70. Identify the expression that is invalid. Explain yourreasoning.a) b)c) d)71. Let the plane region be a unit circle and let the maximumvalue of on be 6. Is the greatest possible value ofequal to 6? Why or why not? If not, whatis the greatest possible value?Rfx, y dy dx RfR20x0fx, y dy dx203xfx, y dy dx20y0fx, y dy dx2030fx, y dy dxRfx, y dARdARfx, y dAR.x, yfx, yRR fx, y dA? R,x, yf x, ykB.xy-RWRITING ABOUT CONCEPTSz sin 2 x, z 0, 0 ≤ x ≤ , 0 ≤ y ≤ 5z x 2 y 2 , x 2 y 2 4, z 037. first octant38. first octant39. first octant40.In Exercises 41–46, set up a double integral to find the volumeof the solid region bounded by the graphs of the equations. Donot evaluate the integral.41. 42.43.44.45.46.In Exercises 47–50, use a computer algebra system to find thevolume of the solid bounded by the graphs of the equations.47.48. first octant49.50.51. If is a continuous function such that over aregionof area 1, prove that52. Find the volume of the solid in the first octant bounded by thecoordinate planes and the planewhereandIn Exercises 53–58, sketch the region of integration. Thenevaluate the iterated integral, switching the order of integrationif necessary.53. 54.55. 56.57.58.Average ValueIn Exercises 59– 64, find the average value ofover the region59.rectangle with vertices60.rectangle with vertices61.square with vertices62.triangle with vertices63.triangle with vertices64.rectangle with vertices65. Average Production The Cobb-Douglas production functionfor an automobile manufacturer iswhereis the number of units of labor and is the number of units ofcapital. Estimate the average production level if the number ofunits of labor varies between 200 and 250 and the number ofunits of capital varies between 300 and 325.66. Average Temperature The temperature in degrees Celsius onthe surface of a metal plate iswhereandare measured in centimeters. Estimate the averagetemperature if varies between 0 and 2 centimeters and variesbetween 0 and 4 centimeters.yxyxTx, y 20 4x 2 y 2 ,yxyxfx, y 100x 0.6 y 0.4 ,0, 0 , , 0 , , , 0,R:fx, y sen x y0, 0 , 0, 1 , 1, 1R:f x, y e x y 0, 0 , 1, 0 , 1, 1R:fx, y1xy0, 0 , 2, 0 , 2, 2 , 0, 2R:f x, y x 2 y 2 0, 0 , 5, 0 , 5, 3 , 0, 3R:fx, y2xy0, 0 , 4, 0 , 4, 2 , 0, 2R:fx, yxR.f x, y20212x 2y cos y dy dx10arccos y0sin x 1 sin 2 x dx dy301y 311 x 4 dx dy224 x 24 x 2 4 y 2 dy dxln 10010e x 1ln y dy dx1012y 2e x2 dx dyc > 0.b > 0,a > 0,xa yb zc 1,0 R f x, y dA 1.R0 fx, y 1fz ln 1 x y , z 0, y 0, x 0, x 4 yz21 x 2 y 2, z 0, y 0, x 0, y 0.5x 1x 2 9 y, z 2 9 y,z 9 x 2 y 2 , z 0z x 2 y 2 , z 18 x 2 y 2z x 2 2y 2 , z 4yz sin 2 x, z 0, 0 x , 0 y 5z x 2 y 2 , x 2 y 2 4, z 0z = 2xyx42−2−2121zz = x 2 + y 2z = 4 − x 2 − y 2z = 4 − 2xyx422zz11 y 2, x 0, x 2, y 0z x y, x 2 y 2 4,y 4 x 2 , z 4 x 2 ,x 2 z 2 1, y 2 z 2 1,1002 Chapter 14 Multiple IntegrationCAS67. State the definition of a double integral. If the integrand isa nonnegative function over the region of integration, givethe geometric interpretation of a double integral.68. Let be a region in the plane whose area is Iffor every point in what is the value ofExplain.69. Let represent a county in the northern part of the UnitedStates, and letrepresent the total annual snowfall atthe point in Interpret each of the following.(a)(b)70. Identify the expression that is invalid. Explain yourreasoning.a) b)c) d)71. Let the plane region be a unit circle and let the maximumvalue of on be 6. Is the greatest possible value ofequal to 6? Why or why not? If not, whatis the greatest possible value?Rfx, y dy dx RfR20x0fx, y dy dx203xfx, y dy dx20y0fx, y dy dx2030fx, y dy dxRfx, y dARdARfx, y dAR.x, yfx, yRR fx, y dA? R,x, yf x, ykB.xy-RWRITING ABOUT CONCEPTS37. first octant38. first octant39. first octant40.In Exercises 41–46, set up a double integral to find the volumeof the solid region bounded by the graphs of the equations. Donot evaluate the integral.41. 42.43.44.45.46.In Exercises 47–50, use a computer algebra system to find thevolume of the solid bounded by the graphs of the equations.47.48. first octant49.50.51. If is a continuous function such that over aregionof area 1, prove that52. Find the volume of the solid in the first octant bounded by thecoordinate planes and the planewhereandIn Exercises 53–58, sketch the region of integration. Thenevaluate the iterated integral, switching the order of integrationif necessary.53. 54.55. 56.57.58.Average ValueIn Exercises 59– 64, find the average value ofover the region59.rectangle with vertices60.rectangle with vertices61.square with vertices62.triangle with vertices63.triangle with vertices64.rectangle with vertices65. Average Production The Cobb-Douglas production functionfor an automobile manufacturer iswhereis the number of units of labor and is the number of units ofcapital. Estimate the average production level if the number ofunits of labor varies between 200 and 250 and the number ofunits of capital varies between 300 and 325.66. Average Temperature The temperature in degrees Celsius onthe surface of a metal plate iswhereandare measured in centimeters. Estimate the averagetemperature if varies between 0 and 2 centimeters and variesbetween 0 and 4 centimeters.yxyxTx, y 20 4x 2 y 2 ,yxyxfx, y 100x 0.6 y 0.4 ,0, 0 , , 0 , , , 0,R:fx, y sen x y0, 0 , 0, 1 , 1, 1R:fx, y e x y 0, 0 , 1, 0 , 1, 1R:fx, y1xy0, 0 , 2, 0 , 2, 2 , 0, 2R:fx, y x 2 y 2 0, 0 , 5, 0 , 5, 3 , 0, 3R:f x, y2xy0, 0 , 4, 0 , 4, 2 , 0, 2R:f x, yxR.f x, y20212x 2y cos y dy dx10arccos y0sin x 1 sin 2 x dx dy301y 311 x 4 dx dy224 x 24 x 2 4 y 2 dy dxln 10010e x 1ln y dy dx1012y 2e x2 dx dyc > 0.b > 0,a > 0,xa yb zc 1,0 R f x, y dA 1.R0 fx, y 1fz ln 1 x y , z 0, y 0, x 0, x 4 yz21 x 2 y 2, z 0, y 0, x 0, y 0.5x 1x 2 9 y, z 2 9 y,z 9 x 2 y 2 , z 0z x 2 y 2 , z 18 x 2 y 2z x 2 2y 2 , z 4yz sin 2 x, z 0, 0 x , 0 y 5z x 2 y 2 , x 2 y 2 4, z 0z = 2xyx42−2−2121zz = x 2 + y 2z = 4 − x 2 − y 2z = 4 − 2xyx422zz11 y 2, x 0, x 2, y 0z x y, x 2 y 2 4,y 4 x 2 , z 4 x 2 ,x 2 z 2 1, y 2 z 2 1,1002 Chapter 14 Multiple IntegrationCAS67. State the definition of a double integral. If the integrand isa nonnegative function over the region of integration, givethe geometric interpretation of a double integral.68. Let be a region in the plane whose area is Iffor every point in what is the value ofExplain.69. Let represent a county in the northern part of the UnitedStates, and letrepresent the total annual snowfall atthe point in Interpret each of the following.(a)(b)70. Identify the expression that is invalid. Explain yourreasoning.a) b)c) d)71. Let the plane region be a unit circle and let the maximumvalue of on be 6. Is the greatest possible value ofequal to 6? Why or why not? If not, whatis the greatest possible value?Rfx, y dy dx RfR20x0fx, y dy dx203xfx, y dy dx20y0fx, y dy dx2030fx, y dy dxRfx, y dARdARfx, y dAR.x, yfx, yRR fx, y dA? R,x, yf x, ykB.xy-RWRITING ABOUT CONCEPTSz 11 y 2, x 0, x 2, y ≥ 0z x y, x 2 y 2 4,y 4 x 2 , z 4 x 2 ,x 2 z 2 1, y 2 z 2 1,Desarrollo de conceptos67. Enunciar la definición de integral doble. Dar la interpretacióngeométrica de una integral doble si el integrando esuna función no negativa sobre la región de integración.68. Sea R una región en el plano xy cuya área es B. Si ƒ(x, y) kpara todo punto (x, y) en R, ¿cuál es el valor deExplicar.69. Sea R un condado en la parte norte de Estados Unidos, y seaƒ(x, y) la precipitación anual de nieve en el punto (x, y) de R.Interpretar cada uno de los siguientes.a) b)70. Identificar la expresión que es inválida. Explicar el razonamiento.71. Sea la región plana R un círculo unitario y el máximo valorde f sobre R sea 6. ¿Es el valor más grande posible deigual a 6? ¿Por qué sí o por qué no? Si esno, ¿cuál es el valor más grande posible?37. first octant38. first octant39. first octant40.In Exercises 41–46, set up a double integral to find the volumeof the solid region bounded by the graphs of the equations. Donot evaluate the integral.41. 42.43.44.45.46.In Exercises 47–50, use a computer algebra system to find thevolume of the solid bounded by the graphs of the equations.47.48. first octant49.50.51. If is a continuous function such that over aregionof area 1, prove that52. Find the volume of the solid in the first octant bounded by thecoordinate planes and the planewhereandIn Exercises 53–58, sketch the region of integration. Thenevaluate the iterated integral, switching the order of integrationif necessary.53. 54.55. 56.57.58.Average ValueIn Exercises 59– 64, find the average value ofover the region59.rectangle with vertices60.rectangle with vertices61.square with vertices62.triangle with vertices63.triangle with vertices64.rectangle with vertices65. Average Production The Cobb-Douglas production functionfor an automobile manufacturer iswhereis the number of units of labor and is the number of units ofcapital. Estimate the average production level if the number ofunits of labor varies between 200 and 250 and the number ofunits of capital varies between 300 and 325.66. Average Temperature The temperature in degrees Celsius onthe surface of a metal plate iswhereandare measured in centimeters. Estimate the averagetemperature if varies between 0 and 2 centimeters and variesbetween 0 and 4 centimeters.yxyxTx, y 20 4x 2 y 2 ,yxyxfx, y 100x 0.6 y 0.4 ,0, 0 , , 0 , , , 0,R:fx, y sen x y0, 0 , 0, 1 , 1, 1R:fx, y e x y 0, 0 , 1, 0 , 1, 1R:fx, y1xy0, 0 , 2, 0 , 2, 2 , 0, 2R:f x, y x 2 y 2 0, 0 , 5, 0 , 5, 3 , 0, 3R:fx, y2xy0, 0 , 4, 0 , 4, 2 , 0, 2R:fx, yxR.f x, y20212x 2y cos y dy dx10arccos y0sin x 1 sin 2 x dx dy301y 311 x 4 dx dy224 x 24 x 2 4 y 2 dy dxln 10010e x 1ln y dy dx1012y 2e x2 dx dyc > 0.b > 0,a > 0,xa yb zc 1,0 R f x, y dA 1.R0 fx, y 1fz ln 1 x y , z 0, y 0, x 0, x 4 yz21 x 2 y 2, z 0, y 0, x 0, y 0.5x 1x 2 9 y, z 2 9 y,z 9 x 2 y 2 , z 0z x 2 y 2 , z 18 x 2 y 2z x 2 2y 2 , z 4yz sin 2 x, z 0, 0 x , 0 y 5z x 2 y 2 , x 2 y 2 4, z 0z = 2xyx42−2−2121zz = x 2 + y 2z = 4 − x 2 − y 2z = 4 − 2xyx422zz11 y 2, x 0, x 2, y 0z x y, x 2 y 2 4,y 4 x 2 , z 4 x 2 ,x 2 z 2 1, y 2 z 2 1,1002 Chapter 14 Multiple IntegrationCAS67. State the definition of a double integral. If the integrand isa nonnegative function over the region of integration, givethe geometric interpretation of a double integral.68. Let be a region in the plane whose area is Iffor every point in what is the value ofExplain.69. Let represent a county in the northern part of the UnitedStates, and letrepresent the total annual snowfall atthe point in Interpret each of the following.(a)(b)70. Identify the expression that is invalid. Explain yourreasoning.a) b)c) d)71. Let the plane region be a unit circle and let the maximumvalue of on be 6. Is the greatest possible value ofequal to 6? Why or why not? If not, whatis the greatest possible value?Rf x, y dy dx RfR20x0fx, y dy dx203xfx, y dy dx20y0fx, y dy dx2030fx, y dy dxRfx, y dARdARfx, y dAR.x, yfx, yRR fx, y dA? R,x, yf x, ykB.xy-RWRITING ABOUT CONCEPTSRf x, y dARdARf x, y dA R f x, y dA?sensen37. first octant38. first octant39. first octant40.In Exercises 41–46, set up a double integral to find the volumeof the solid region bounded by the graphs of the equations. Donot evaluate the integral.41. 42.43.44.45.46.In Exercises 47–50, use a computer algebra system to find thevolume of the solid bounded by the graphs of the equations.47.48. first octant49.50.51. If is a continuous function such that over aregionof area 1, prove that52. Find the volume of the solid in the first octant bounded by thecoordinate planes and the planewhereandIn Exercises 53–58, sketch the region of integration. Thenevaluate the iterated integral, switching the order of integrationif necessary.53. 54.55. 56.57.58.Average ValueIn Exercises 59– 64, find the average value ofover the region59.rectangle with vertices60.rectangle with vertices61.square with vertices62.triangle with vertices63.triangle with vertices64.rectangle with vertices65. Average Production The Cobb-Douglas production functionfor an automobile manufacturer iswhereis the number of units of labor and is the number of units ofcapital. Estimate the average production level if the number ofunits of labor varies between 200 and 250 and the number ofunits of capital varies between 300 and 325.66. Average Temperature The temperature in degrees Celsius onthe surface of a metal plate iswhereandare measured in centimeters. Estimate the averagetemperature if varies between 0 and 2 centimeters and variesbetween 0 and 4 centimeters.yxyxTx, y 20 4x 2 y 2 ,yxyxfx, y 100x 0.6 y 0.4 ,0, 0 , , 0 , , , 0,R:fx, y sen x y0, 0 , 0, 1 , 1, 1R:fx, y e x y 0, 0 , 1, 0 , 1, 1R:fx, y1xy0, 0 , 2, 0 , 2, 2 , 0, 2R:f x, y x 2 y 2 0, 0 , 5, 0 , 5, 3 , 0, 3R:fx, y2xy0, 0 , 4, 0 , 4, 2 , 0, 2R:fx, yxR.f x, y20212x 2y cos y dy dx10arccos y0sin x 1 sin 2 x dx dy301y 311 x 4 dx dy224 x 24 x 2 4 y 2 dy dxln 10010e x 1ln y dy dx1012y 2e x2 dx dyc > 0.b > 0,a > 0,xa yb zc 1,0 R f x, y dA 1.R0 fx, y 1fz ln 1 x y , z 0, y 0, x 0, x 4 yz21 x 2 y 2, z 0, y 0, x 0, y 0.5x 1x 2 9 y, z 2 9 y,z 9 x 2 y 2 , z 0z x 2 y 2 , z 18 x 2 y 2z x 2 2y 2 , z 4yz sin 2 x, z 0, 0 x , 0 y 5z x 2 y 2 , x 2 y 2 4, z 0z = 2xyx42−2−2121zz = x 2 + y 2z = 4 − x 2 − y 2z = 4 − 2xyx422zz11 y 2, x 0, x 2, y 0z x y, x 2 y 2 4,y 4 x 2 , z 4 x 2 ,x 2 z 2 1, y 2 z 2 1,1002 Chapter 14 Multiple IntegrationCAS67. State the definition of a double integral. If the integrand isa nonnegative function over the region of integration, givethe geometric interpretation of a double integral.68. Let be a region in the plane whose area is Iffor every point in what is the value ofExplain.69. Let represent a county in the northern part of the UnitedStates, and letrepresent the total annual snowfall atthe point in Interpret each of the following.(a)(b)70. Identify the expression that is invalid. Explain yourreasoning.a) b)c) d)71. Let the plane region be a unit circle and let the maximumvalue of on be 6. Is the greatest possible value ofequal to 6? Why or why not? If not, whatis the greatest possible value?Rfx, y dy dx RfR20x0fx, y dy dx203xfx, y dy dx20y0fx, y dy dx2030fx, y dy dxRfx, y dARdARfx, y dAR.x, yfx, yRR fx, y dA? R,x, yf x, ykB.xy-RWRITING ABOUT CONCEPTSCAS37. first octant38. first octant39. first octant40.In Exercises 41–46, set up a double integral to find the volumeof the solid region bounded by the graphs of the equations. Donot evaluate the integral.41. 42.43.44.45.46.In Exercises 47–50, use a computer algebra system to find thevolume of the solid bounded by the graphs of the equations.47.48. first octant49.50.51. If is a continuous function such that over aregionof area 1, prove that52. Find the volume of the solid in the first octant bounded by thecoordinate planes and the planewhereandIn Exercises 53–58, sketch the region of integration. Thenevaluate the iterated integral, switching the order of integrationif necessary.53. 54.55. 56.57.58.Average ValueIn Exercises 59– 64, find the average value ofover the region59.rectangle with vertices60.rectangle with vertices61.square with vertices62.triangle with vertices63.triangle with vertices64.rectangle with vertices65. Average Production The Cobb-Douglas production functionfor an automobile manufacturer iswhereis the number of units of labor and is the number of units ofcapital. Estimate the average production level if the number ofunits of labor varies between 200 and 250 and the number ofunits of capital varies between 300 and 325.66. Average Temperature The temperature in degrees Celsius onthe surface of a metal plate iswhereandare measured in centimeters. Estimate the averagetemperature if varies between 0 and 2 centimeters and variesbetween 0 and 4 centimeters.yxyxTx, y 20 4x 2 y 2 ,yxyxfx, y 100x 0.6 y 0.4 ,0, 0 , , 0 , , , 0,R:fx, y sen x y0, 0 , 0, 1 , 1, 1R:fx, y e x y 0, 0 , 1, 0 , 1, 1R:fx, y1xy0, 0 , 2, 0 , 2, 2 , 0, 2R:f x, y x 2 y 2 0, 0 , 5, 0 , 5, 3 , 0, 3R:fx, y2xy0, 0 , 4, 0 , 4, 2 , 0, 2R:fx, yxR.f x, y20212x 2y cos y dy dx10arccos y0sin x 1 sin 2 x dx dy301y 311 x 4 dx dy224 x 24 x 2 4 y 2 dy dxln 10010e x 1ln y dy dx1012y 2e x2 dx dyc > 0.b > 0,a > 0,xa yb zc 1,0 R f x, y dA 1.R0 fx, y 1fz ln 1 x y , z 0, y 0, x 0, x 4 yz21 x 2 y 2, z 0, y 0, x 0, y 0.5x 1x 2 9 y, z 2 9 y,z 9 x 2 y 2 , z 0z x 2 y 2 , z 18 x 2 y 2z x 2 2y 2 , z 4yz sin 2 x, z 0, 0 x , 0 y 5z x 2 y 2 , x 2 y 2 4, z 0z = 2xyx42−2−2121zz = x 2 + y 2z = 4 − x 2 − y 2z = 4 − 2xyx422zz11 y 2, x 0, x 2, y 0z x y, x 2 y 2 4,y 4 x 2 , z 4 x 2 ,x 2 z 2 1, y 2 z 2 1,1002 Chapter 14 Multiple IntegrationCAS67. State the definition of a double integral. If the integrand isa nonnegative function over the region of integration, givethe geometric interpretation of a double integral.68. Let be a region in the plane whose area is Iffor every point in what is the value ofExplain.69. Let represent a county in the northern part of the UnitedStates, and letrepresent the total annual snowfall atthe point in Interpret each of the following.(a)(b)70. Identify the expression that is invalid. Explain yourreasoning.a) b)c) d)71. Let the plane region be a unit circle and let the maximumvalue of on be 6. Is the greatest possible value ofequal to 6? Why or why not? If not, whatis the greatest possible value?Rfx, y dy dx RfR20x0f x, y dy dx203xf x, y dy dx20y0f x, y dy dx2030f x, y dy dxRfx, y dARdARfx, y dAR.x, yfx, yRR f x, y dA?R,x, yf x, ykB.xy-RWRITING ABOUT CONCEPTSsen37. first octant38. first octant39. first octant40.In Exercises 41–46, set up a double integral to find the volumeof the solid region bounded by the graphs of the equations. Donot evaluate the integral.41. 42.43.44.45.46.In Exercises 47–50, use a computer algebra system to find thevolume of the solid bounded by the graphs of the equations.47.48. first octant49.50.51. If is a continuous function such that over aregionof area 1, prove that52. Find the volume of the solid in the first octant bounded by thecoordinate planes and the planewhereandIn Exercises 53–58, sketch the region of integration. Thenevaluate the iterated integral, switching the order of integrationif necessary.53. 54.55. 56.57.58.Average ValueIn Exercises 59– 64, find the average value ofover the region59.rectangle with vertices60.rectangle with vertices61.square with vertices62.triangle with vertices63.triangle with vertices64.rectangle with vertices65. Average Production The Cobb-Douglas production functionfor an automobile manufacturer iswhereis the number of units of labor and is the number of units ofcapital. Estimate the average production level if the number ofunits of labor varies between 200 and 250 and the number ofunits of capital varies between 300 and 325.66. Average Temperature The temperature in degrees Celsius onthe surface of a metal plate iswhereandare measured in centimeters. Estimate the averagetemperature if varies between 0 and 2 centimeters and variesbetween 0 and 4 centimeters.yxyxTx, y 20 4x 2 y 2 ,yxyxfx, y 100x 0.6 y 0.4 ,0, 0 , , 0 , , , 0,R:fx, y sen x y0, 0 , 0, 1 , 1, 1R:fx, y e x y 0, 0 , 1, 0 , 1, 1R:fx, y1xy0, 0 , 2, 0 , 2, 2 , 0, 2R:f x, y x 2 y 2 0, 0 , 5, 0 , 5, 3 , 0, 3R:fx, y2xy0, 0 , 4, 0 , 4, 2 , 0, 2R:fx, yxR.f x, y2021 2 x 2y cos y dy dx10arccos y0sin x 1 sin 2 x dx dy301y 311 x 4 dx dy224 x 24 x 2 4 y 2 dy dxln 10010e x 1ln y dy dx1012y 2e x2 dx dyc > 0.b > 0,a > 0,xa yb zc 1,0 R f x, y dA 1.R0 fx, y 1fz ln 1 x y , z 0, y 0, x 0, x 4 yz21 x 2 y 2, z 0, y 0, x 0, y 0.5x 1x 2 9 y, z 2 9 y,z 9 x 2 y 2 , z 0z x 2 y 2 , z 18 x 2 y 2z x 2 2y 2 , z 4yz sin 2 x, z 0, 0 x , 0 y 5z x 2 y 2 , x 2 y 2 4, z 0z = 2xyx42−2−2121zz = x 2 + y 2z = 4 − x 2 − y 2z = 4 − 2xyx422zz11 y 2, x 0, x 2, y 0z x y, x 2 y 2 4,y 4 x 2 , z 4 x 2 ,x 2 z 2 1, y 2 z 2 1,1002 Chapter 14 Multiple IntegrationCAS67. State the definition of a double integral. If the integrand isa nonnegative function over the region of integration, givethe geometric interpretation of a double integral.68. Let be a region in the plane whose area is Iffor every point in what is the value ofExplain.69. Let represent a county in the northern part of the UnitedStates, and letrepresent the total annual snowfall atthe point in Interpret each of the following.(a)(b)70. Identify the expression that is invalid. Explain yourreasoning.a) b)c) d)71. Let the plane region be a unit circle and let the maximumvalue of on be 6. Is the greatest possible value ofequal to 6? Why or why not? If not, whatis the greatest possible value?Rfx, y dy dx RfR20x0fx, y dy dx203xfx, y dy dx20y0fx, y dy dx2030fx, y dy dxRfx, y dARdARfx, y dAR.x, yfx, yRR f x, y dA?R,x, yf x, ykB.xy-RWRITING ABOUT CONCEPTS
SECCIÓN 14.2 Integrales dobles y volumen 1003ProbabilidadUna función de densidad de probabilidad conjuntade las variables aleatorias continuas x y y es una funciónƒ(x, y) que satisface las propiedades siguientes.a) para todo b)c)En los ejercicios 73 a 76, mostrar que la función es una funciónde densidad de probabilidad conjunta y hallar la probabilidadrequerida.73.74.75.76.77. Aproximación En una fábrica de cemento la base de un montónde arena es rectangular con dimensiones aproximadas de 20por 30 metros. Si la base se coloca en el plano xy con un vérticeen el origen, las coordenadas de la superficie del montón son(5, 5, 3), (15, 5, 6), (25, 5, 4), (5, 15, 2), (15, 15, 7) y (25, 15, 3).Aproximar el volumen de la arena en el montón.78. Programación Considerar una función continua sobrela región rectangular R con vértices (a, c), (b, c), (a, d) y (b, d)donde y Dividir los intervalos y enysubintervalos, de modo que los subintervalos en una direccióndada sean de igual longitud. Escribir un programa para queuna herramienta de graficación calcule la sumadondees el centro de un rectángulo representativo enAproximaciónEn los ejercicios 79 a 82, a) utilizar un sistemaalgebraico por computadora y aproximar la integral iterada, yb) utilizar el programa del ejercicio 78 para aproximar la integraliterada con los valores dados de m y n.79. 80.81. 82.AproximaciónEn los ejercicios 83 y 84, determinar qué valoraproxima mejor el volumen del sólido entre el plano xy y la funciónsobre la región. (Hacer la elección con base en un dibujo del sólidoy sin realizar ningún cálculo.)83.cuadrado con vérticesa) b) 600 c) 50 d) 125 e) 1 00084.círculo acotado pora) 50 b) 500 c) d) 5 e) 5 000¿Verdadero o falso?En los ejercicios 85 y 86, determinar si ladeclaración es verdadera o falsa. Si es falsa, explicar por qué odar un ejemplo que demuestre que es falsa.85. El volumen de la esfera está dado por la integral86. Si para todo en R, y ƒ y g son continuasen R, entonces87. Sea Hallar el valor promedio de f en el intervalo88. Hallar Sugerencia: Evaluar89. Determinar la región R en el plano xy que maximiza el valor de90. Determinar la región R en el plano xy que minimiza el valor de91. Hallar (Sugerencia: Convertir laintegral en una integral doble.)92. Utilizar un argumento geométrico para mostrar que309y 209 x 2 y 2 dx dy 92 . 2 0 arctanx arctan x dx.ProbabilityA joint density function of the continuous randomvariables and is a function satisfying the followingproperties.(a) for all (b)(c)In Exercises 73–76, show that the function is a joint densityfunction and find the required probability.73.74.75.76.77. Approximation The base of a pile of sand at a cement plant isrectangular with approximate dimensions of 20 meters by30 meters. If the base is placed on the plane with one vertexat the origin, the coordinates on the surface of the pile areandApproximate the volume of sand in the pile.78. Programming Consider a continuous function overthe rectangular region with vertices andwhere and Partition the intervals andinto and subintervals, so that the subintervals in agiven direction are of equal length. Write a program for agraphing utility to compute the sumwhereis the center of a representative rectangle inApproximationIn Exercises 79–82, (a) use a computer algebrasystem to approximate the iterated integral, and (b) use theprogram in Exercise 78 to approximate the iterated integral forthe given values ofand79. 80.81. 82.ApproximationIn Exercises 83 and 84, determine which valuebest approximates the volume of the solid between the-planeand the function over the region. (Make your selection on thebasis of a sketch of the solid and not by performing anycalculations.)83.square with vertices(a) (b) 600 (c) 50 (d) 125 (e) 100084.circle bounded by(a) 50 (b) 500 (c) (d) 5 (e) 5000True or False?In Exercises 85 and 86, determine whether thestatement is true or false. If it is false, explain why or give anexample that shows it is false.85. The volume of the sphere is given by theintegral86. If for all in and both and arecontinuous overthen87. Let Find the average value of on the interval88. Find Hint: Evaluate89. Determine the region in the -plane that maximizes thevalue of90. Determine the region in the -plane that minimizes thevalue of91. Find (Hint: Convert the integralto a double integral.)92. Use a geometric argument to show that309 y 209 x 2 y 2 dx dy92 .20 arctan x arctan x dx.R x2 y 2 4 dA.xyRR 9 x2 y 2 dA.xyR21e xy dy.0e xe 2xxdx.0, 1 .ff xx1 e t2 dt.R fx, y dAR gx, y dA.R, gfR,x, yf x, yg x, yV 810101 x 2 y 2 dx dy.x 2 y 2 z 2 1500x 2 y 2 9R:fx, y x 2 y 22000, 0 , 4, 0 , 4, 4 , 0, 4R:fx, y4xxym 6, n 4m 4, n 84121x 3y 3 dx dy6420y cosx dx dym 10, n 20m 4, n 8204020e x3 8 dy dx1020sen x y dy dxn.mR.x i , y jni 1mj 1fx i , y j A i badcfx, y dAnmc, da, bc < d.a < bb, d ,a, d ,b, c ,a, c ,Rfx, y25, 15, 3 .15, 15, 7 ,5, 15, 2 ,25, 5, 4 ,15, 5, 6 ,5, 5, 3 ,xy-P 0 x 1, x y 1fx, ye x y ,0,x 0, y 0elsewhereP 0 x 1, 4 y 6fx, y127 9 x y ,0,0 x 3, 3 y 6elsewhereP 0 x 1, 1 y 2fx, y14 xy,0,0 x 2, 0 y 2elsewhereP 0 x 2, 1 y 2fx, y110 ,0,0 x 5, 0 y 2elsewhereP[ x, y R]Rfx, y dAfx, y dA 1x, yf x, y ~ 0fx, yyx14.2 Double Integrals and Volume 100372. The following iterated integrals represent the solution to thesame problem. Which iterated integral is easier to evaluate?Explain your reasoning.402x 2sen y 2 dy dx202y0sen y 2 dx dyCAPSTONECAS93. Evaluate where and arepositive.94. Show that if there does not exist a real-valued functionsuch that for all in the closed intervalThese problems were composed by the Committee on the Putnam PrizeCompetition. © The Mathematical Association of America. All rights reserved.ux 11x uyuy x dy. 0 x 1,xu> 1 2baa0 b0 emax b2 x 2 , a 2 y 2 dy dx,PUTNAM EXAM CHALLENGEProbabilityA joint density function of the continuous randomvariables and is a function satisfying the followingproperties.(a) for all (b)(c)In Exercises 73–76, show that the function is a joint densityfunction and find the required probability.73.74.75.76.77. Approximation The base of a pile of sand at a cement plant isrectangular with approximate dimensions of 20 meters by30 meters. If the base is placed on the plane with one vertexat the origin, the coordinates on the surface of the pile areandApproximate the volume of sand in the pile.78. Programming Consider a continuous function overthe rectangular region with vertices andwhere and Partition the intervals andinto and subintervals, so that the subintervals in agiven direction are of equal length. Write a program for agraphing utility to compute the sumwhereis the center of a representative rectangle inApproximationIn Exercises 79–82, (a) use a computer algebrasystem to approximate the iterated integral, and (b) use theprogram in Exercise 78 to approximate the iterated integral forthe given values ofand79. 80.81. 82.ApproximationIn Exercises 83 and 84, determine which valuebest approximates the volume of the solid between the-planeand the function over the region. (Make your selection on thebasis of a sketch of the solid and not by performing anycalculations.)83.square with vertices(a) (b) 600 (c) 50 (d) 125 (e) 100084.circle bounded by(a) 50 (b) 500 (c) (d) 5 (e) 5000True or False?In Exercises 85 and 86, determine whether thestatement is true or false. If it is false, explain why or give anexample that shows it is false.85. The volume of the sphere is given by theintegral86. If for all in and both and arecontinuous overthen87. Let Find the average value of on the interval88. Find Hint: Evaluate89. Determine the region in the -plane that maximizes thevalue of90. Determine the region in the -plane that minimizes thevalue of91. Find (Hint: Convert the integralto a double integral.)92. Use a geometric argument to show that309 y 209 x 2 y 2 dx dy92 .20 arctan x arctan x dx.R x2 y 2 4 dA.xyRR 9 x2 y 2 dA.xyR21e xy dy.0e xe 2xxdx.0, 1 .ff xx1 e t2 dt.R fx, y dAR gx, y dA.R, gfR,x, yf x, yg x, yV 810101 x 2 y 2 dx dy.x 2 y 2 z 2 1500x 2 y 2 9R:fx, y x 2 y 22000, 0 , 4, 0 , 4, 4 , 0, 4R:fx, y4xxym 6, n 4m 4, n 84121x 3y 3 dx dy6420y cosx dx dym 10, n 20m 4, n 8204020e x3 8 dy dx1020sen x y dy dxn.mR.x i , y jni 1mj 1fx i , y j A i badcfx, y dAnmc, da, bc < d.a < bb, d ,a, d ,b, c ,a, c ,Rfx, y25, 15, 3 .15, 15, 7 ,5, 15, 2 ,25, 5, 4 ,15, 5, 6 ,5, 5, 3 ,xy-P 0 x 1, x y 1fx, ye x y ,0,x 0, y 0elsewhereP 0 x 1, 4 y 6fx, y127 9 x y ,0,0 x 3, 3 y 6elsewhereP 0 x 1, 1 y 2fx, y14 xy,0,0 x 2, 0 y 2elsewhereP 0 x 2, 1 y 2fx, y110 ,0,0 x 5, 0 y 2elsewhereP[ x, y R]Rfx, y dAfx, y dA 1x, yf x, y ~ 0fx, yyx14.2 Double Integrals and Volume 100372. The following iterated integrals represent the solution to thesame problem. Which iterated integral is easier to evaluate?Explain your reasoning.402x 2sen y 2 dy dx202y0sen y 2 dx dyCAPSTONECAS93. Evaluate where and arepositive.94. Show that if there does not exist a real-valued functionsuch that for all in the closed intervalThese problems were composed by the Committee on the Putnam PrizeCompetition. © The Mathematical Association of America. All rights reserved.ux 11x uyuy x dy. 0 x 1,xu> 1 2baa0 b0 emax b2 x 2 , a 2 y 2 dy dx,PUTNAM EXAM CHALLENGE21e xy dy. 0e x e 2xxdx.0, 1.f x x 1 e t2 dt.ProbabilityA joint density function of the continuous randomvariables and is a function satisfying the followingproperties.(a) for all (b)(c)In Exercises 73–76, show that the function is a joint densityfunction and find the required probability.73.74.75.76.77. Approximation The base of a pile of sand at a cement plant isrectangular with approximate dimensions of 20 meters by30 meters. If the base is placed on the plane with one vertexat the origin, the coordinates on the surface of the pile areandApproximate the volume of sand in the pile.78. Programming Consider a continuous function overthe rectangular region with vertices andwhere and Partition the intervals andinto and subintervals, so that the subintervals in agiven direction are of equal length. Write a program for agraphing utility to compute the sumwhereis the center of a representative rectangle inApproximationIn Exercises 79–82, (a) use a computer algebrasystem to approximate the iterated integral, and (b) use theprogram in Exercise 78 to approximate the iterated integral forthe given values ofand79. 80.81. 82.ApproximationIn Exercises 83 and 84, determine which valuebest approximates the volume of the solid between the-planeand the function over the region. (Make your selection on thebasis of a sketch of the solid and not by performing anycalculations.)83.square with vertices(a) (b) 600 (c) 50 (d) 125 (e) 100084.circle bounded by(a) 50 (b) 500 (c) (d) 5 (e) 5000True or False?In Exercises 85 and 86, determine whether thestatement is true or false. If it is false, explain why or give anexample that shows it is false.85. The volume of the sphere is given by theintegral86. If for all in and both and arecontinuous overthen87. Let Find the average value of on the interval88. Find Hint: Evaluate89. Determine the region in the -plane that maximizes thevalue of90. Determine the region in the -plane that minimizes thevalue of91. Find (Hint: Convert the integralto a double integral.)92. Use a geometric argument to show that309 y 209 x 2 y 2 dx dy92 .20 arctan x arctan x dx.R x2 y 2 4 dA.xyRR 9 x2 y 2 dA.xyR21e xy dy.0e xe 2xxdx.0, 1 .ff xx1 e t2 dt.R f x, y dAR g x, y dA.R, gfR,x, yf x, yg x, yV 810101 x 2 y 2 dx dy.x 2 y 2 z 2 1500x 2 y 2 9R:fx, y x 2 y 22000, 0 , 4, 0 , 4, 4 , 0, 4R:fx, y4xxym 6, n 4m 4, n 84121x 3y 3 dx dy6420y cosx dx dym 10, n 20m 4, n 8204020e x3 8 dy dx1020sen x y dy dxn.mR.x i , y jni 1mj 1fx i , y j A i badcfx, y dAnmc, da, bc < d.a < bb, d ,a, d ,b, c ,a, c ,Rfx, y25, 15, 3 .15, 15, 7 ,5, 15, 2 ,25, 5, 4 ,15, 5, 6 ,5, 5, 3 ,xy-P 0 x 1, x y 1fx, ye x y ,0,x 0, y 0elsewhereP 0 x 1, 4 y 6fx, y127 9 x y ,0,0 x 3, 3 y 6elsewhereP 0 x 1, 1 y 2fx, y14 xy,0,0 x 2, 0 y 2elsewhereP 0 x 2, 1 y 2fx, y110 ,0,0 x 5, 0 y 2elsewhereP[ x, y R]Rfx, y dAfx, y dA 1x, yf x, y ~ 0fx, yyx14.2 Double Integrals and Volume 100372. The following iterated integrals represent the solution to thesame problem. Which iterated integral is easier to evaluate?Explain your reasoning.402x 2sen y 2 dy dx202y0sen y 2 dx dyCAPSTONECAS93. Evaluate where and arepositive.94. Show that if there does not exist a real-valued functionsuch that for all in the closed intervalThese problems were composed by the Committee on the Putnam PrizeCompetition. © The Mathematical Association of America. All rights reserved.ux 11x uyuy x dy. 0 x 1,xu> 1 2baa0 b0 emax b2 x 2 , a 2 y 2 dy dx,PUTNAM EXAM CHALLENGEx, yf x, y ≤ gx, yV 810101 x 2 y 2 dx dy.x 2 y 2 z 2 1500x 2 y 2 9R:f x, y x 2 y 22000, 0, 4, 0, 4, 4, 0, 4R:f x, y 4xm 6, n 4m 4, n 84121x 3 y 3 dx dy6420y cos x dx dym 10, n 20m 4, n 8204020e x3 8 dy dx1020sin x y dy dxR.x i , y j ni1 mj1f x i , y j A i badcf x, y dAnmc, da, bc < d.a < bf x, yP0 ≤ x ≤ 1, x ≤ y ≤ 1f x, y e xy ,0,x ≥ 0, y ≥ 0elsewhereP0 ≤ x ≤ 1, 4 ≤ y ≤ 6f x, y 1279 x y,0,0 ≤ x ≤ 3, 3 ≤ y ≤ 6elsewhereP0 ≤ x ≤ 1, 1 ≤ y ≤ 2f x, y 14 xy,0,0 ≤ x ≤ 2, 0 ≤ y ≤ 2elsewhereP0 ≤ x ≤ 2, 1 ≤ y ≤ 2f x, y 110 ,0,0 ≤ x ≤ 5, 0 ≤ y ≤ 2elsewhereP[x, y R] R f x, y dA f x, y dA 1x, yf x, y ≥ 0en cualquier otro puntoen cualquier otro puntoen cualquier otro puntoen cualquier otro puntoPara discusión72. Las siguientes integrales iteradas representan la solución almismo problema. ¿Cuál integral iterada es más fácil de evaluar?Explicar el razonamiento.ProbabilityA joint density function of the continuous randomvariables and is a function satisfying the followingproperties.(a) for all (b)(c)In Exercises 73–76, show that the function is a joint densityfunction and find the required probability.73.74.75.76.77. Approximation The base of a pile of sand at a cement plant isrectangular with approximate dimensions of 20 meters by30 meters. If the base is placed on the plane with one vertexat the origin, the coordinates on the surface of the pile areandApproximate the volume of sand in the pile.78. Programming Consider a continuous function overthe rectangular region with vertices andwhere and Partition the intervals andinto and subintervals, so that the subintervals in agiven direction are of equal length. Write a program for agraphing utility to compute the sumwhereis the center of a representative rectangle inApproximationIn Exercises 79–82, (a) use a computer algebrasystem to approximate the iterated integral, and (b) use theprogram in Exercise 78 to approximate the iterated integral forthe given values ofand79. 80.81. 82.ApproximationIn Exercises 83 and 84, determine which valuebest approximates the volume of the solid between the-planeand the function over the region. (Make your selection on thebasis of a sketch of the solid and not by performing anycalculations.)83.square with vertices(a) (b) 600 (c) 50 (d) 125 (e) 100084.circle bounded by(a) 50 (b) 500 (c) (d) 5 (e) 5000True or False?In Exercises 85 and 86, determine whether thestatement is true or false. If it is false, explain why or give anexample that shows it is false.85. The volume of the sphere is given by theintegral86. If for all in and both and arecontinuous overthen87. Let Find the average value of on the interval88. Find Hint: Evaluate89. Determine the region in the -plane that maximizes thevalue of90. Determine the region in the -plane that minimizes thevalue of91. Find (Hint: Convert the integralto a double integral.)92. Use a geometric argument to show that309 y 209 x 2 y 2 dx dy92 .20 arctan x arctan x dx.R x2 y 2 4 dA.xyRR 9 x2 y 2 dA.xyR21e xy dy.0e xe 2xxdx.0, 1 .ff xx1 e t2 dt.R fx, y dAR gx, y dA.R, gfR,x, yf x, yg x, yV 810101 x 2 y 2 dx dy.x 2 y 2 z 2 1500x 2 y 2 9R:fx, y x 2 y 22000, 0 , 4, 0 , 4, 4 , 0, 4R:fx, y4xxym 6, n 4m 4, n 84121x 3y 3 dx dy6420y cosx dx dym 10, n 20m 4, n 8204020e x3 8 dy dx1020sen x y dy dxn.mR.x i , y jni 1mj 1fx i , y j A i badcfx, y dAnmc, da, bc < d.a < bb, d ,a, d ,b, c ,a, c ,Rfx, y25, 15, 3 .15, 15, 7 ,5, 15, 2 ,25, 5, 4 ,15, 5, 6 ,5, 5, 3 ,xy-P 0 x 1, x y 1fx, ye x y ,0,x 0, y 0elsewhereP 0 x 1, 4 y 6fx, y127 9 x y ,0,0 x 3, 3 y 6elsewhereP 0 x 1, 1 y 2fx, y14 xy,0,0 x 2, 0 y 2elsewhereP 0 x 2, 1 y 2fx, y110 ,0,0 x 5, 0 y 2elsewhereP[ x, y R]Rfx, y dAfx, y dA 1x, yf x, y ~ 0fx, yyx14.2 Double Integrals and Volume 100372. The following iterated integrals represent the solution to thesame problem. Which iterated integral is easier to evaluate?Explain your reasoning.402x 2sen y 2 dy dx202y0sen y 2 dx dyCAPSTONECAS93. Evaluate where and arepositive.94. Show that if there does not exist a real-valued functionsuch that for all in the closed intervalThese problems were composed by the Committee on the Putnam PrizeCompetition. © The Mathematical Association of America. All rights reserved.ux 11x uyuy x dy. 0 x 1,xu> 1 2baa0 b0 emax b2 x 2 , a 2 y 2 dy dx,PUTNAM EXAM CHALLENGECASPreparación del examen Putnam93. Evaluar donde a y b son positivos.94. Probar que si no existe una función real u tal que, paratodo x en el intervalo cerrado ,Estos problemas fueron preparados por el Committee on the Putnam PrizeCompetition. © The Mathematical Association of America. Todos los derechos reservados.ProbabilityA joint density function of the continuous randomvariables and is a function satisfying the followingproperties.(a) for all (b)(c)In Exercises 73–76, show that the function is a joint densityfunction and find the required probability.73.74.75.76.77. Approximation The base of a pile of sand at a cement plant isrectangular with approximate dimensions of 20 meters by30 meters. If the base is placed on the plane with one vertexat the origin, the coordinates on the surface of the pile areandApproximate the volume of sand in the pile.78. Programming Consider a continuous function overthe rectangular region with vertices andwhere and Partition the intervals andinto and subintervals, so that the subintervals in agiven direction are of equal length. Write a program for agraphing utility to compute the sumwhereis the center of a representative rectangle inApproximationIn Exercises 79–82, (a) use a computer algebrasystem to approximate the iterated integral, and (b) use theprogram in Exercise 78 to approximate the iterated integral forthe given values ofand79. 80.81. 82.ApproximationIn Exercises 83 and 84, determine which valuebest approximates the volume of the solid between the-planeand the function over the region. (Make your selection on thebasis of a sketch of the solid and not by performing anycalculations.)83.square with vertices(a) (b) 600 (c) 50 (d) 125 (e) 100084.circle bounded by(a) 50 (b) 500 (c) (d) 5 (e) 5000True or False?In Exercises 85 and 86, determine whether thestatement is true or false. If it is false, explain why or give anexample that shows it is false.85. The volume of the sphere is given by theintegral86. If for all in and both and arecontinuous overthen87. Let Find the average value of on the interval88. Find Hint: Evaluate89. Determine the region in the -plane that maximizes thevalue of90. Determine the region in the -plane that minimizes thevalue of91. Find (Hint: Convert the integralto a double integral.)92. Use a geometric argument to show that309 y 209 x 2 y 2 dx dy92 .20 arctan x arctan x dx.R x2 y 2 4 dA.xyRR 9 x 2 y 2 dA.xyR21e xy dy.0e xe 2xxdx.0, 1 .ff xx1 e t2 dt.R fx, y dAR gx, y dA.R, gfR,x, yf x, yg x, yV 810101 x 2 y 2 dx dy.x 2 y 2 z 2 1500x 2 y 2 9R:fx, y x 2 y 22000, 0 , 4, 0 , 4, 4 , 0, 4R:fx, y4xxym 6, n 4m 4, n 84121x 3y 3 dx dy6420y cosx dx dym 10, n 20m 4, n 8204020e x3 8 dy dx1020sen x y dy dxn.mR.x i , y jni 1mj 1fx i , y j A i badcfx, y dAnmc, da, bc < d.a < bb, d ,a, d ,b, c ,a, c ,Rfx, y25, 15, 3 .15, 15, 7 ,5, 15, 2 ,25, 5, 4 ,15, 5, 6 ,5, 5, 3 ,xy-P 0 x 1, x y 1fx, ye x y ,0,x 0, y 0elsewhereP 0 x 1, 4 y 6fx, y127 9 x y ,0,0 x 3, 3 y 6elsewhereP 0 x 1, 1 y 2fx, y14 xy,0,0 x 2, 0 y 2elsewhereP 0 x 2, 1 y 2fx, y110 ,0,0 x 5, 0 y 2elsewhereP[ x, y R]Rfx, y dAfx, y dA 1x, yf x, y ~ 0fx, yyx14.2 Double Integrals and Volume 100372. The following iterated integrals represent the solution to thesame problem. Which iterated integral is easier to evaluate?Explain your reasoning.402x 2sen y 2 dy dx202y0sen y 2 dx dyCAPSTONES93. Evaluate where and arepositive.94. Show that if there does not exist a real-valued functionsuch that for all in the closed intervalThese problems were composed by the Committee on the Putnam PrizeCompetition. © The Mathematical Association of America. All rights reserved.ux 11x u y u y x dy. 0 x 1,xu> 1 2baa0 b0 emax b2 x 2 , a 2 y 2 dy dx,PUTNAM EXAM CHALLENGEProbabilityA joint density function of the continuous randomvariables and is a function satisfying the followingproperties.(a) for all (b)(c)In Exercises 73–76, show that the function is a joint densityfunction and find the required probability.73.74.75.76.77. Approximation The base of a pile of sand at a cement plant isrectangular with approximate dimensions of 20 meters by30 meters. If the base is placed on the plane with one vertexat the origin, the coordinates on the surface of the pile areandApproximate the volume of sand in the pile.78. Programming Consider a continuous function overthe rectangular region with vertices andwhere and Partition the intervals andinto and subintervals, so that the subintervals in agiven direction are of equal length. Write a program for agraphing utility to compute the sumwhereis the center of a representative rectangle inApproximationIn Exercises 79–82, (a) use a computer algebrasystem to approximate the iterated integral, and (b) use theprogram in Exercise 78 to approximate the iterated integral forthe given values ofand79.81.Approximation In Exercises 83best approximates the volume ofand the function over the regionbasis of a sketch of the solidcalculations.)83.square with vertices(a) (b) 600 (c) 5084.circle bounded by(a) 50 (b) 500 (c)True or False?In Exercises 85 astatement is true or false. If it isexample that shows it is false.85. The volume of the sphereintegral86. If for allcontinuous overthen87. Let Find the a88. Find89. Determine the region in thvalue of90. Determine the region in thvalue of91. Findto a double integral.)92. Use a geometric argument to s309 y 209 x 2 y 2 dx d20 arctan x arctan xR x2 y 2 4 dA.RR 9 x2 y 2 dA.R0e xe 2xxdx.0, 1 .f xx1 e t2 dt.R fxR, x,f x, yg x, yV 810101 x 2 y 2 dxx 2500x 2 y 2R:fx, y x 2 y 22000, 0 ,R:fx, y4xm 4, n 86420y cosx dx dym 4, n 81020sen x y dy dxn.mR.x i , y jni 1mj 1fx i , y j A i badcfx, y dAnmc, da, bc < d.a < bb, d ,a, d ,b, c ,a, c ,Rfx, y25, 15, 3 .15, 15, 7 ,5, 15, 2 ,25, 5, 4 ,15, 5, 6 ,5, 5, 3 ,xy-P 0 x 1, x y 1fx, ye x y ,0,x 0, y 0elsewhereP 0 x 1, 4 y 6fx, y127 9 x y ,0,0 x 3, 3 y 6elsewhereP 0 x 1, 1 y 2fx, y14 xy,0,0 x 2, 0 y 2elsewhereP 0 x 2, 1 y 2fx, y110 ,0,0 x 5, 0 y 2elsewhereP[ x, y R]Rfx, y dAfx, y dA 1x, yf x, y ~ 0fx, yyx14.2 Double In72. The following iterated integrals represent the solution to thesame problem. Which iterated integral is easier to evaluate?Explain your reasoning.402x 2sen y 2 dy dx202y0sen y 2 dx dyCAPSTONECAS93. Evaluatepositive.94. Show that if there doetion such that for all in tThese problems were composed by thCompetition. © The Mathematical Associau x 11x uyuyxxu> 1 2a0 b0 emax b2 x 2 , a 2 y 2PUTNAM EXAM CHALLEN0 ≤ x ≤ 1 > 1 2ProbabilityA joint density function of the continuous randomvariables and is a function satisfying the followingproperties.(a) for all (b)(c)In Exercises 73–76, show that the function is a joint densityfunction and find the required probability.73.74.75.76.77. Approximation The base of a pile of sand at a cement plant isrectangular with approximate dimensions of 20 meters by30 meters. If the base is placed on the plane with one vertexat the origin, the coordinates on the surface of the pile areandApproximate the volume of sand in the pile.78. Programming Consider a continuous function overthe rectangular region with vertices andwhere and Partition the intervals andinto and subintervals, so that the subintervals in agiven direction are of equal length. Write a program for agraphing utility to compute the sumwhereis the center of a representative rectangle inApproximationIn Exercises 79–82, (a) use a computer algebrasystem to approximate the iterated integral, and (b) use theprogram in Exercise 78 to approximate the iterated integral forthe given values ofand79. 80.81. 82.ApproximationIn Exercises 83 and 84, determine which valuebest approximates the volume of the solid between the-planeand the function over the region. (Make your selection on thebasis of a sketch of the solid and not by performing anycalculations.)83.square with vertices(a) (b) 600 (c) 50 (d) 125 (e) 100084.circle bounded by(a) 50 (b) 500 (c) (d) 5 (e) 5000True or False?In Exercises 85 and 86, determine whether thestatement is true or false. If it is false, explain why or give anexample that shows it is false.85. The volume of the sphere is given by theintegral86. If for all in and both and arecontinuous overthen87. Let Find the average value of on the interval88. Find Hint: Evaluate89. Determine the region in the -plane that maximizes thevalue of90. Determine the region in the -plane that minimizes thevalue of91. Find (Hint: Convert the integralto a double integral.)92. Use a geometric argument to show that309 y 209 x 2 y 2 dx dy92 .20 arctan x arctan x dx.R x2 y 2 4 dA.xyRR 9 x2 y 2 dA.xyR21e xy dy.0e xe 2xxdx.0, 1 .ff xx1 e t2 dt.R fx, y dAR gx, y dA.R, gfR,x, yf x, yg x, yV 810101 x 2 y 2 dx dy.x 2 y 2 z 2 1500x 2 y 2 9R:fx, y x 2 y 22000, 0 , 4, 0 , 4, 4 , 0, 4R:fx, y4xxym 6, n 4m 4, n 84121x 3y 3 dx dy6420y cosx dx dym 10, n 20m 4, n 8204020e x3 8 dy dx1020sen x y dy dxn.mR.x i , y jni 1mj 1fx i , y j A i badcfx, y dAnmc, da, bc < d.a < bb, d ,a, d ,b, c ,a, c ,Rfx, y25, 15, 3 .15, 15, 7 ,5, 15, 2 ,25, 5, 4 ,15, 5, 6 ,5, 5, 3 ,xy-P 0 x 1, x y 1fx, ye x y ,0,x 0, y 0elsewhereP 0 x 1, 4 y 6fx, y127 9 x y ,0,0 x 3, 3 y 6elsewhereP 0 x 1, 1 y 2fx, y14 xy,0,0 x 2, 0 y 2elsewhereP 0 x 2, 1 y 2fx, y110 ,0,0 x 5, 0 y 2elsewhereP[ x, y R]Rfx, y dAfx, y dA 1x, yf x, y ~ 0f x, yyx14.2 Double Integrals and Volume 100372. The following iterated integrals represent the solution to thesame problem. Which iterated integral is easier to evaluate?Explain your reasoning.402x 2sen y 2 dy dx202y0sen y 2 dx dyCAPSTONECAS93. Evaluate where and arepositive.94. Show that if there does not exist a real-valued functionsuch that for all in the closed intervalThese problems were composed by the Committee on the Putnam PrizeCompetition. © The Mathematical Association of America. All rights reserved.ux 11x uyuy x dy. 0 x 1,xu> 1 2baa0 b0 emax b2 x 2 , a 2 y 2 dy dx,PUTNAM EXAM CHALLENGEe máxsen
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A Demostración de teoremas selecci
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B Tablas de integraciónFórmulasu
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Índice analíticoAAceleración, 85
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ÍNDICE ANALÍtICo I-59Máximo rela