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intsinx/(sin4x)dx...

`intsinx/(sin4x)dx`

A

`(1)/(8)log|(cosx-1)/(cos x+1)|-(1)/(2sqrt(2))log|(sqrt(2)cosx-1)/(sqrt(2)cosx+1)|+c`

B

`(1)/(8)log|(sinx-1)/(sinx+1)|-(1)/(4sqrt(2))log|(sqrt(2)sinx-1)/(sqrt(2)sinx+1)|+c`

C

`(1)/(4)log|(sinx-1)/(sinx+1)|-(1)/(sqrt(2))log|(sqrt(2)sinx-1)/(sqrt(2)sinx+1)|+c`.

D

None of these.

Text Solution

Verified by Experts

The correct Answer is:
B
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