Identify the domain and range for the function(adsbygoogle = window.adsbygoogle || []).push({});

f= {(x,y)[tex] \in \mathbb{R} [/tex] x [tex]\mathbb{R}:y=\chi _{\mathbb{Z}}[/tex](x)}

[tex]f={(x,y)\in \mathbb{R} x \mathbb{R}:y=\frac{e^x + e^{-x}}{2}[/tex]

How do I determine the correct results. I am not really understanding the terminology.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Domain and Range

**Physics Forums | Science Articles, Homework Help, Discussion**