How to find the scope of a function definition?

Question

Mathematics

I don’t know if it’s possible to ask questions of this kind here, but how to find the domain of the function
y=1/x^2+4.
I will be very grateful

Answer 1

No, you shouldn't do that here. you here .

Answer 2

This function is defined on two segments
[- infinity; 0[ ]0; + infinity]
Because you can't divide by 0

Answer 3

m.wolframalpha.com/input/?i=y%3D1%2Fx%5E2%2B4&x=0&y=0
Domain:
{x element R : x!=0}