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

Question

1311 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2015-09-02T20:56:44

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

$y = 1/x^2$

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

The domain is $x≠0$ .

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

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