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Comprehension (for Q. No. 1 to 3) Let f(...

Comprehension (for Q. No. 1 to 3) Let `f(x)=sin^(-1)(1-x^2)/(1+x^2)+tan^(-1)(2x)/(1-x^2)` . Then If `f^(prime)(-2)=k ,t h e nk=` 0 (b) `4/5` (c) `pi/2` (d) `(16)/5`

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