Apply the quotient rule, which is:
and .
To find :
Apply the power rule: goes to
To find :
Differentiate term by term:
The derivative of the constant is zero.
Apply the power rule: goes to
The result is:
Now plug in to the quotient rule:
The answer is:
1 x ----- - -------- x + 1 2 (x + 1)
/ x \ 2*|-1 + -----| \ 1 + x/ -------------- 2 (1 + x)
/ x \ 6*|1 - -----| \ 1 + x/ ------------- 3 (1 + x)