/ 2 \ log\4*x + x/
d / / 2 \\ --\log\4*x + x// dx
Let .
The derivative of is .
Then, apply the chain rule. Multiply by :
Differentiate term by term:
The derivative of a constant times a function is the constant times the derivative of the function.
Apply the power rule: goes to
So, the result is:
Apply the power rule: goes to
The result is:
The result of the chain rule is:
Now simplify:
The answer is:
2
(1 + 8*x)
8 - -----------
x*(1 + 4*x)
---------------
x*(1 + 4*x)
/ 2\
| (1 + 8*x) |
2*(1 + 8*x)*|-12 + -----------|
\ x*(1 + 4*x)/
-------------------------------
2 2
x *(1 + 4*x)