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