Let .
Apply the power rule: goes to
Then, apply the chain rule. Multiply by :
Differentiate term by term:
The derivative of the constant is zero.
Apply the power rule: goes to
The result is:
The result of the chain rule is:
The answer is:
2
x
1 - ------
2
4 + x
-----------
________
/ 2
\/ 4 + x
/ 2 \
| x |
3*x*|-1 + ------|
| 2|
\ 4 + x /
-----------------
3/2
/ 2\
\4 + x /