# Chapter 3 - Section 3.1 - Functions - 3.1 Assess Your Understanding: 115

No, not the same.

#### Work Step by Step

No, the functions $f(x)=x - 1$ and $g(x)=\frac{x^2-1}{x+1}$ are not the same, because they have different domains. The domain of $f$ is all real numbers, but the domain of $g$ is all real numbers except $-1$ ($x\ne -1$) because the denominator can't be negative.

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.