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If y=tan^(-1)((sinx+cosx)/(cosx-sinx)) ,...

If `y=tan^(-1)((sinx+cosx)/(cosx-sinx))` , then `(dy)/(dx)` is equal to `1/2` (b) 0 (c) 1 (d) none of these

A

` -1`

B

`1`

C

` (-1)/(2)`

D

` (1)/(2)`

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Verified by Experts

The correct Answer is:
B
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