/ _________\ | / 2*x + 3 | log| / ------- | \\/ 4*x + 5 /
log(sqrt((2*x + 3)/(4*x + 5)))
Let .
The derivative of is .
Then, apply the chain rule. Multiply by :
Let .
Apply the power rule: goes to
Then, apply the chain rule. Multiply by :
Apply the quotient rule, which is:
and .
To find :
Differentiate term by term:
The derivative of the constant is zero.
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:
To find :
Differentiate term by term:
The derivative of the constant is zero.
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 plug in to the quotient rule:
The result of the chain rule is:
The result of the chain rule is:
Now simplify:
The answer is:
/ 1 2*(2*x + 3)\ |------- - -----------|*(4*x + 5) |4*x + 5 2| \ (4*x + 5) / --------------------------------- 2*x + 3
/ 2*(3 + 2*x)\ / 1 2 \ 2*|-1 + -----------|*|------- + -------| \ 5 + 4*x / \3 + 2*x 5 + 4*x/ ---------------------------------------- 3 + 2*x
/ 2*(3 + 2*x)\ / 1 4 2 \ 8*|-1 + -----------|*|- ---------- - ---------- - -------------------| \ 5 + 4*x / | 2 2 (3 + 2*x)*(5 + 4*x)| \ (3 + 2*x) (5 + 4*x) / ---------------------------------------------------------------------- 3 + 2*x