int(cos2x)/((sinx+cosx)^(2))dx is equal ...

`int(cos2x)/((sinx+cosx)^(2))dx` is equal to

A

`logabs(sqrt(cosx+sinx))+c`

B

`logabs(cosx-sinx)+c`

C

`logabs(cosx+sinx)+c`

D

`-1/(cosx+sinx)+c`

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The correct Answer is:

C

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