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 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 is:
The result of the chain rule is:
Now simplify:
The answer is:
1 + x ------------- __________ / 2 \/ x + 2*x
2
(1 + x)
1 - ---------
x*(2 + x)
-------------
___________
\/ x*(2 + x)