JEE Math Practice Question
Suppose $$f(x)=\frac{\left(2^x+2^{-x}\right) \tan x \sqrt{\tan ^{-1}\left(x^2-x+1\right)}}{\left(7 x^2+3 x+1\right)^3}$$. Then the value of $$f^{\prime}(0)$$ is equal to
- A.$$\pi$$
- B.$$\sqrt{\pi}$$
- C.0
- D.$$\frac{\pi}{2}$$
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