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

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

A

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

B

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

C

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

D

(d) None of these

Verified by Experts

The correct Answer is:

C

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