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If phi(x)=int cot^(4)xdx+(1)/(3)cot^(3)x...

If `phi(x)=int cot^(4)xdx+(1)/(3)cot^(3)x-cot x` and `phi((pi)/(2))=(pi)/(2)` then `phi(x)` is
(A) `pi-x`
(B) `x-pi`
(C) `(pi)/(2)-x`
(D) `x`

A

`pi/2 - x`

B

`x - pi`

C

`pi - x`

D

`x`

Text Solution

Verified by Experts

The correct Answer is:
D
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