Let .
The derivative of is itself.
Then, apply the chain rule. Multiply by :
The derivative of a constant times a function is the constant times the derivative of the function.
Apply the power rule: goes to
So, the result is:
The result of the chain rule is:
The answer is:
2 / 2\ -x 2*\-1 + 2*x /*e
2 / 2\ -x 4*x*\3 - 2*x /*e