Differentiate term by term:
Let .
Apply the power rule: goes to
Then, apply the chain rule. Multiply by :
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 the constant is zero.
The result is:
The result of the chain rule is:
The result of the chain rule is:
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:
Now simplify:
The answer is:
4 5*log (x + 9) -5 + ------------- x + 9
3 5*log (9 + x)*(4 - log(9 + x)) ------------------------------ 2 (9 + x)
2 / 2 \ 10*log (9 + x)*\6 + log (9 + x) - 6*log(9 + x)/ ----------------------------------------------- 3 (9 + x)