How do you find the domain and range of $g(x) = 1-2x^2$ ?

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Answer 1 · 2017-03-07T23:08:37

There are no radicals or fractions involved, so the domain is
$-oo < x<+oo$

Since $x^2>=0->-2x^2<=0$ :

$->1-2x^2<=1$ (equal when $x=0$ )

So the range is $-oo < g(x)<=1$

How do you find the domain and range of g(x) = 1-2x^2g(x) = 1-2x^2?