Hi.

First post on the forum, but regardless of which, need some assistance.

I have the following equation: $\displaystyle f(x)=\frac{x}{x+3}$

My purpose is, to quote the text:

I know I must take the derivative of the equation to find the cp's, however, I don't know exactly how to do it "the shortcut way" (where the fraction is made into a negative exponential power).

When I use the quotient rule, I get the following: $\displaystyle f'(x)=\frac{3}{(x+3)^2}$

After that, I'm not sure how to factor the equation to get the cp's. I know that's done by setting it equal to zero; factoring is where I'm

.