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Cálculo - Frank Ayres Jr & Elliot Mendelson - 5ed (1)

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274<br />

CAPÍTULO 32 Técnicas de integración II: integrandos trigonométricos<br />

2<br />

3 2 2 1 2 2 5/ 2<br />

68. x a x dx a x<br />

a<br />

5 a<br />

2 x<br />

2 3/<br />

2<br />

( ) ( ) C<br />

3<br />

69.<br />

dx<br />

2<br />

ln( x 2 x 4x13)<br />

C<br />

2<br />

x 4x<br />

13<br />

70.<br />

<br />

dx<br />

( 4x<br />

x ) /<br />

<br />

x 2<br />

4 4x<br />

x<br />

2 3 2 2<br />

C<br />

71. dx 1 −1<br />

x x<br />

∫ 2 2= 54 tan<br />

2<br />

C<br />

( 9 + x ) ( 3 ) + +<br />

18( 9 + x )<br />

En los problemas 72 y 73, aplique primero integración por partes.<br />

72. x sen 1 1 2 1 1 2<br />

xdx 4 ( 2x 1)sen<br />

x 4 x 1 x C<br />

73. xcos 1 1 2 1 1 2<br />

x dx 4 ( 2x 1)cos<br />

x 4 x 1<br />

x C

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