# What are the critical points of #(x^2/(x^2-1))#?

##### 1 Answer

I will put f(x) in front of

To find the critical number, you must get the first derivative of

f(x) =

The first derivative is

Now you must set

-2x = 0

x = 0 ------------------------------now you must plug them back to the

---------------------------------------- back to the original equation.

---------------------------------------Since x = 1 and x = -1 are undefined, they --------------------------------------------------------are not critical numbers

Since x = 0 is defined in the original equation, it is a critical number.