Let .
The derivative of is itself.
Then, apply the chain rule. Multiply by :
Let .
Apply the power rule: goes to
Then, apply the chain rule. Multiply by :
Differentiate term by term:
Apply the power rule: goes to
The derivative of the constant is zero.
The result is:
The result of the chain rule is:
The result of the chain rule is:
Now simplify:
The answer is:
1 ----- x + 5 -e -------- 2 (x + 5)
1 ----- / 1 \ 5 + x |2 + -----|*e \ 5 + x/ ------------------ 3 (5 + x)