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| List-$I$ | List-$II$ |
| $A. \frac{d}{dx}\left(\tan^{-1}\left(\sqrt{\frac{1-\cos x}{1+\cos x}}\right)\right)$ | $(i) \log(x+\sqrt{1+x^2})$ |
| $B. \frac{d}{dx}\left(\frac{3+|x-1|}{3x+4}\right)$ | $(ii) -\frac{4x}{(1+x^2)^2}$ |
| $C. \sinh^{-1} x$ | $(iii) \frac{1}{2}$ |
| $D. \frac{d^2}{dx^2}\left(\cos^{-1}\left(\frac{1-x^2}{1+x^2}\right)\right)$ | $(iv) \frac{1}{\sqrt{1+x^2}}$ |
| $(v) \text{not differentiable at } x=1$ |
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