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.
Let .
The derivative of is .
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:
So, the result is:
The result is:
Now simplify:
The answer is:
/ 2 \
| 2*x |
2*|-1 + ------|
| 2|
\ 1 + x /
---------------
2
1 + x
/ 2 \
| 4*x |
4*x*|3 - ------|
| 2|
\ 1 + x /
----------------
2
/ 2\
\1 + x /