Questions in differentiation

Select	Question
	If $y = {3^{{x^2}}}$, then $\frac{{dy}}{{dx}}$ is equal to
	The first derivative of the function $(\sin 2x\cos 2x\cos 3x + {\log _2}{2^{x + 3}})$ with respect to x at $x = \pi $is
	The values of x, at which the first derivative of the function ${\left( {\sqrt x + \frac{1}{{\sqrt x }}} \right)^2}$w.r.t. x is $\frac{3}{4}$, are
	If $y = \frac{{{{(1 - x)}^2}}}{{{x^2}}}$, then $\frac{{dy}}{{dx}}$is
	If $pv = 81$, then $\frac{{dp}}{{dv}}$ is at v = 9 equal to
	$\frac{d}{{dx}}(\sin 2{x^2})$ equals
	$\frac{d}{{dx}}\cos \,{{\rm{h}}^{ - 1}}(\sec x) = $
	If $f(x) = \frac{1}{{\sqrt {{x^2} + {a^2}} + \sqrt {{x^2} + {b^2}} }}$, then $f'(x)$ is equal to
	The derivative of $f(x) = x\|x\|$ is
	The derivative of $y = 1 - \|x\|$at $x = 0$is