/ 2 \ log\x - x/
d / / 2 \\ --\log\x - x// dx
Let .
The derivative of is .
Then, apply the chain rule. Multiply by :
Differentiate term by term:
Apply the power rule: goes to
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:
The result is:
The result of the chain rule is:
Now simplify:
The answer is:
2 (-1 + 2*x) 2 - ----------- x*(-1 + x) --------------- x*(-1 + x)
/ 2\ | (-1 + 2*x) | 2*(-1 + 2*x)*|-3 + -----------| \ x*(-1 + x)/ ------------------------------- 2 2 x *(-1 + x)