Evaluate (By Parts).
 1  x4
1. 

x3
dx
Let u  1  x 4
du 
4 x 3dx
2 1  x4
dv 

2x 3dx
1  x4
v
1
x
3
dx  x 3dx
x 2
1
 2
2 2x
 x 7dx
2. 
 1  x4
 x 5dx
3. 
4 2
 (1  x )
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