$\begin{array}{1 1} \large \frac{1}{4} \frac{e^\sqrt x}{\sqrt (x\; e^\sqrt x)} \\ \large \frac{1}{2} \frac{1}{ (x\; e^\sqrt x)} \\ \large \frac{1}{4} \frac{e^\sqrt x}{(x\; e^\sqrt x)} \\ \large \frac{1}{2} \frac{1}{\sqrt (x\; e^\sqrt x)}\end{array} $