Apply the quotient rule, which is:
and .
To find :
Differentiate term by term:
The derivative of the constant is zero.
Apply the power rule: goes to
The result is:
To find :
Apply the power rule: goes to
Now plug in to the quotient rule:
Now simplify:
The answer is:
/ 2\
| 25 + x |
2*|-1 + -------|
| 2 |
\ x /
----------------
x
/ 2\
| 25 + x |
6*|1 - -------|
| 2 |
\ x /
---------------
2
x