for g(x) = (x-2) / (x^2 -9)(adsbygoogle = window.adsbygoogle || []).push({});

the domain of the function would be simply to have the denominator not equal to 0, which in this case would be x = 3.

but.. the solution states that it is-3and 3 cannot be used.

this is confusing seeing that -3^2 -9 = -18 which is not 0.

maybe it means |-3|?

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

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!

# Domain of a function

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