So the function is [tex]f(x) = 2 + 3x^{2} - x^{4}[/tex](adsbygoogle = window.adsbygoogle || []).push({});

Find the intervals of increase + decrease, local max + min value, inflection points (IP), interval the function is concave up + down

I know that I need to first find f'(x) to find the increase and decrease, so I solved that:

[tex]f'(x) = 6x - 4x^{3}[/tex]

Now, the problem I'm having is finding the critical numbers. I know that 0 is obviously one of them, but I don't know what the other one is (since I'm quite confident that there is another one)

Thanks for your help!

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# Homework Help: Finding Values of a Function (increasing, decreasing, IPs, etc.)

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