# What is the domain of #f(x)=sqrt(x-1)#?

##### 1 Answer

Sep 9, 2015

Domain:

#### Explanation:

The domain of the function will be restricted by the fact that the expression under the square root **cannot** be negative for real number solutions.

This means that you need to have

#x - 1 >=0#

#x >= 1#

Any value of **smaller** than

graph{sqrt(x-1) [-7.9, 7.9, -3.95, 3.95]}