Apply the quotient rule, which is:
and .
To find :
Apply the power rule: goes to
To find :
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:
Now plug in to the quotient rule:
Now simplify:
The answer is:
1 x*(-2 - 2*x)
-------- + ------------
2 4
(x + 1) (x + 1)
/ 3*x \
2*|-2 + -----|
\ 1 + x/
--------------
3
(1 + x)
/ 4*x \
6*|3 - -----|
\ 1 + x/
-------------
4
(1 + x)