Question $2$

If $y=x^{\frac{1}{2}}$ then $\frac{dy}{dx}$ is

$\frac{1}{2}\sqrt[\phantom{2}]{x}$

$-\frac{1}{2}\sqrt[\phantom{2}]{x}$

$\frac{1}{2\sqrt[\phantom{2}]{2}}$

$\sqrt[\phantom{2}]{x}$

None of the above

Question $3$