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P. 134
dx
dx
10. (1 x) x dx (x 1/2 x 3/2 )dx 16. x 2 6x 8 (x 3) 2 1
x 1/2 dx x 3/2 dx 1 ln (x 1 - 3) c
2 (x 3) 1
2 x 3/2 2 x 5/2 C 1 ln x 2 C
3 5 2 x 4
11. dx 1 2dx 17. x 2 dx 1 1
dx
4x 2 9 2 (2x) 2 3 2 x 1 x 1
1
ln(2x 4x ) 9 C x ln x 1 C
2
2
12. (3s 4) 2 ds (9s 2 24s 16)ds 18. x 2 dx 1 (x 3 2) 1/4 3x 2 dx
4
x 3 2 3
1 3 1 2 1 1 4
9 s 24 s 16s c u 1/4 du u 3/4 C
3 2 3 3 3
3s 3 12s 16s C 4 (x 2) 3/4 C
2
3
9
13. x 3 5x 2 4 dx (x 5 4x 2 )dx 19. (2x 2 5x 3)dx ?
2
x
1
4x
1
x 5x c 2 x 2 dx 5 xdx 3 dx
2
2 1
1 x 5x 4 c 2x 3 5x 2 3x C
2
2 x 3 2
xdx 1 2xdx 1
14. 2 2 ln x 1 C
2
x 1 2 x 1 2
1 ln x 1 lnC lnC x 1
2
2
2
ln C x 2 1
15. (x 3 2) 2 .3x 2 dx 20. x 2 dx 1 2x 4 dx
x 2 9 2 x 2 9
Misalkan : (x 2) u du 3x 2 dx 2xdx 2 dx
3
x 2 9 x 2 9
(x 2) 2 .3x 2 dx u 2 du 1 u C x 9 2ln(x x ) 9 C
3
2
2
3
3
1 (x 2) C
3
3
3
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