3
x
--------
2
(x - 1)
x^3/(x - 1)^2
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:
2 3
3*x x *(2 - 2*x)
-------- + ------------
2 4
(x - 1) (x - 1)
/ 2 \
| x 2*x |
6*x*|1 + --------- - ------|
| 2 -1 + x|
\ (-1 + x) /
----------------------------
2
(-1 + x)
/ 3 2 \
| 6*x 4*x 9*x |
6*|1 - ------ - --------- + ---------|
| -1 + x 3 2|
\ (-1 + x) (-1 + x) /
--------------------------------------
2
(-1 + x)