Okay, I was programming this game, when I discovered something probably obvious. I realized that I wrongly assumed that when f"(x)=0, it is a point of inflexion. I found that when doing the test for x^4, (at 0, it is the minima); the test came with 0. So is there any way of finding the nature of the extrema in situations such as this?(adsbygoogle = window.adsbygoogle || []).push({});

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# The Double Derivative

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