If y=(a^(cos^(-1)x))/(1+a^(cos^(-1)x)) a...

If `y=(a^(cos^(-1)x))/(1+a^(cos^(-1)x))` and `z=a^(cos^(-1)x)`, then `(dy)/(dz)=` is equal to........

A

`(1)/(1+a^(cos^(-1)x))`

B

`-(1)/(1+a^(cos^(-1)x))`

C

`(1)/((1+a^(cos^(-1)x))^2)`

D

None of these

Verified by Experts

The correct Answer is:

C

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