Is $f(x) = 3 - 2x + x^4$ a polynomial?

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Answer 1 · 2015-05-29T23:14:10

Yes, $f$ is a polynomial function, of degree 4.

A polynomial function is a sum of expression such as $a x^n$ with $a$ a number and $n$ an non negative integer.

The degree is the larger integer $n$ what you can find your expression.

Is f(x) = 3 - 2x + x^4f(x) = 3 - 2x + x^4 a polynomial?