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If y = "Cos"^(-1) ((x - x^-1)/(x + x^-1)...

If `y = "Cos"^(-1) ((x - x^-1)/(x + x^-1))` then `(dy)/(dx) = `

A

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

B

`2/(1 +x^2)`

C

`1/(1 + x^2)`

D

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

Text Solution

Verified by Experts

The correct Answer is:
A
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