# How do you find the critical numbers for #f(x) = (x - 1 )/( x + 3)# to determine the maximum and minimum?

##### 1 Answer

May 5, 2017

There are no critical numbers (maximums or minimums)

#### Explanation:

Critical numbers are found when

Find

Given:

Let

Let

Simplify:

Find critical numbers

Multiply both sides by the denominator:

There are no critical numbers (maximums or minimums).

This can be seen by graphing the function:

graph{(x-1)/(x+3) [-11.66, 8.34, -5.12, 4.88]}