differentiation

Question: The derivative of ${{\cos }^{-1}}\left( \frac{1-{{x}^{2}}}{1+{{x}^{2}}} \right)$ w.r.t. ${{\cot }^{-1}}\left( \frac{1-3{{x}^{2}}}{3x-{{x}^{2}}} \right)$ is

1) 1

2) $\frac{3}{2}$

3) $\frac{2}{3}$

4) $\frac{1}{2}$

Solution:

Explanation: No Explanation

Differentiation by substitution Higher order derivatives

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