Question: "Evaluate $\frac{d}{dx}[ \tan^{-1}(\frac{\sqrt{1 + x} - \sqrt{1 - x}}{\sqrt{1 + x} + \sqrt{1 - x}}) ]$ for $-1" | TestX
Loading Question: "Evaluate $\frac{d}{dx}[ \tan^{-1}(\frac{\sqrt{1 + x} - \sqrt{1 - x}}{\sqrt{1 + x} + \sqrt{1 - x}}) ]$ for $-1" | TestX...