Consider the following:

y = (x)/(x2+9)

Find y^(')(x).

y^(')(x) =

Find the critical numbers of y(x). (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.)

x =

What is the derivative of y with respect to x?

A) y^(')(x) =
B) y^(')(x) =
C) y^(')(x) =
D) y^(')(x) =

Please enter your answer for x.