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If y = tan^(-1)((x+a)/(1-xa)) then (dy)/...

If `y = tan^(-1)((x+a)/(1-xa))` then `(dy)/(dx) =`

A

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

B

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

C

`(a)/(a^(2) + x^(2))`

D

`(a^(2))/((1-xa)^(2))`

Text Solution

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The correct Answer is:
B
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