Question

How do you find the domain and range of `y = 1/x^2`?

Answer 1

The domain is `color(red)(x≠0)`; the range is `color(red)(y>0)`.

Explanation:

`y = 1/x^2`

`1/0` is undefined, so `x` cannot equal `0`.

The domain is `x≠0`.

`x^2` is always positive, so the range is `y>0`.