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Cálculo Diferencial e Integral II - Colegio de Bachilleres del Estado ...

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2.1.2. Reglas básicas <strong>de</strong> integración.<br />

DEFINICIÓN DE LA NOTACION INTEGRAL PARA LAS ANTIDERIVADAS:<br />

Si F (x)<br />

es una integral in<strong>de</strong>finida <strong>de</strong> f (x)<br />

se expresa:<br />

∫<br />

( Si y solo si ) + ( )<br />

y = f x)<br />

dx = F(<br />

x)<br />

+ C<br />

Don<strong>de</strong>:<br />

C = Constante arbitraria.<br />

REGLAS BÁSICAS DE INTEGRACION:<br />

1) CONSTANTE: ∫<br />

kdx<br />

= kx + C<br />

2) MULTIPLO CONSTANTE: ∫ ( x)<br />

dx k∫<br />

F ´( x C = f x<br />

kf = f ( x)<br />

dx<br />

3) SUMA O DIFERENCIA: ∫ [ ( x)<br />

g(<br />

x)<br />

] dx = ∫ f ( x)<br />

dx ± ∫<br />

4) POTENCIAS: ∫<br />

5) EXPONENCIALES: ∫<br />

f ± g(<br />

x)<br />

dx<br />

n+<br />

1<br />

n x<br />

x dx = + C , n ≠ 1<br />

n + 1<br />

x x<br />

e dx = e + C<br />

1 1<br />

∫ ∫ −<br />

6) LOGARITMICA: dx = x dx = ln x + C<br />

7) TRIGONOMETRICAS:<br />

∫<br />

x<br />

cos xdx = senx + C<br />

∫ senxdx = −cos<br />

x + C<br />

∫ sec xdx = tan x + C<br />

2<br />

∫ sec x tan xdx = sec x + C<br />

∫ csc xdx = −cot<br />

x + C<br />

2<br />

∫ csc<br />

x cot xdx = −csc<br />

x + C<br />

<strong>Integral</strong> <strong>de</strong>finida<br />

51

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