differentiation

Question: Derivative of ${{\sec }^{-1}}\left\{ \frac{1}{2{{x}^{2}}-1} \right\}$w.r.t $\sqrt{1+3x}$at $x=-\frac{1}{3}$ is



1) 0
2) 1/2
3) 1/3
4) None of these
Solution: Explanation: No Explanation
Differentiation by substitution Higher order derivatives

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