int xcos^(2)xdx=...

`int xcos^(2)xdx=`

A

(a) `x^(2)/4-1/4xsin2x-1/8cos2x+c`

B

(b) `x^(2)/4+1/4xsin2x+1/8cos2x+c`

C

(c) `x^(4)-1/4xsin2x+1/8cos2x+c`

D

(d) `x^(4)+1/4xsin2x-1/8cos2x+c`

Verified by Experts

The correct Answer is:

B

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