What is the domain and range of $y = x^4$ ?

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Answer 1 · 2018-03-25T23:39:57

Domain: $(-oo, oo)$ Range: $[0, oo]$

In general, the domain of any polynomial is $(-oo, oo).$

The range of a positive polynomial $y=x^a$ where $a$ is even is $[0, oo].$

What is the domain and range of y = x^4 y = x^4 ?