x / x\ \e /
/ x\ d |/ x\ | --\\e / / dx
Don't know the steps in finding this derivative.
But the derivative is
The answer is:
/ 2\ \x / 2*x*e
/ 2\ / 2\ \x / 2*\1 + 2*x /*e
/ 2\ / 2\ \x / 4*x*\3 + 2*x /*e