Can someone get me started on this problem.(adsbygoogle = window.adsbygoogle || []).push({});

Show that the function has exactly one zero in the given interval.

f(x) = x^4 + 3x + 1 [-2, -1]

I know I have to use the Intermediate Value theorem in this but not really sure how to apply it. Also what does it mean when it says "a function has one zero" what is a zero?

Thanks in advance

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# Homework Help: Intermediate value theorem

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