# How do you determine the intervals for which the function is increasing or decreasing given #f(x)=1/(x+1)-4#?

##### 1 Answer

Sep 8, 2017

The intervals of decreasing are

#### Explanation:

We need

The domain of

Therefore, the derivative of

There are no critical values, and the variation table is

You can also, calculate the second derivative and determine the concavity.

graph{1/(1+x)-4 [-10, 10, -5, 5]}