Questions in differentiation

Select	Question
	$\frac{d}{dx}\left( {{\tan }^{-1}}\frac{\sqrt{1+{{x}^{2}}}-1}{x} \right)$ is equal to
	Differential coefficient of ${{\sin }^{-1}}\frac{1-x}{1+x}w.r.t \sqrt{x}$is
	The differential coefficient of ${{\tan }^{-1}}\frac{2x}{1-{{x}^{2}}}$ w.r.t. ${{\sin }^{-1}}\frac{2x}{1+{{x}^{2}}}$ is
	Differential coefficient of${{\sin }^{-1}}x$ w.r.t ${{\cos }^{-1}}\sqrt{1-{{x}^{2}}}$ is
	Differential coefficient of $\frac{{{\tan }^{-1}}x}{1+{{\tan }^{-1}}x}$ w.r.t. ${{\tan }^{-1}}x$ is
	The differential coefficient of ${{\tan }^{-1}}\left( \frac{\sqrt{1+{{x}^{2}}}-1}{x} \right)$ with respect to ${{\tan }^{-1}}$x is
	The differential coefficient of ${{\tan }^{-1}}\sqrt{x}$ with respect to $\sqrt{x}$ is
	Differential coefficient of ${{x}^{3}}$ with respect to ${{x}^{2}}$ is
	The differential coefficient of ${{x}^{6}}$ with respect to ${{x}^{3}}$ is
	Derivative of ${{\sec }^{-1}}\left\{ \frac{1}{2{{x}^{2}}-1} \right\}$w.r.t $\sqrt{1+3x}$at $x=-\frac{1}{3}$ is