I have the problem

Give the domain in interval notation for the function:

$\displaystyle f(x)=(x+1)/(sqrt(x-2))$

I think it's (3,inf) because it would have to be 3 or more to be real.

But Mathway says (-inf,3) U (3,inf). If x was 2 it would be imaginary, so what's the deal with Mathway?

Thanks.