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If y=cos^(-1)x , find (d^2y)/(dx^2) in t...

If `y=cos^(-1)x` , find `(d^2y)/(dx^2)` in terms of `y` alone.

A

` -cosec ycot y`

B

` cosec ycot y`

C

` -cosec ^(2)ycot y`

D

` cosec ^(2) ycot y`

Text Solution

Verified by Experts

The correct Answer is:
C
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