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If y = Tan ^(-1) ((cos x- sin x)/(cos x ...

If `y = Tan ^(-1) ((cos x- sin x)/(cos x + sin x))` then `(d ^(2) y)/(dx ^(2))=`

A

0

B

`sin x `

C

`cos x`

D

`-1`

Text Solution

Verified by Experts

The correct Answer is:
A
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