12.07.2015 Views

Active Calculus - Gvsu - Grand Valley State University

Active Calculus - Gvsu - Grand Valley State University

Active Calculus - Gvsu - Grand Valley State University

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4.3. THE DEFINITE INTEGRAL 101Activity 4.7.Use known geometric formulas and the net signed area interpretation of the definite integralto evaluate each of the definite integrals below.(a)(b)(c)(d)∫ 10∫ 4−1∫ 1−1∫ 4−33x dx(2 − 2x) dx√1 − x 2 dxg(x) dx, where g is the function pictured in Figure 4.8. Assume that each portion ofg is either part of a line or part of a circle.1y = g(x)-3 -2 -1 1 2 3 4-1Figure 4.8: A function g that is piecewise defined; each piece of the function is part of a circle orpart of a line.⊳

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