in word problems in calculus is see that for finding largest or smallest volumes, areas etc. The derivative is taken zero and the root is found. My question is shouldnt we see the nature of the function? Like even though the function has local minima or maxima, the minimum or maximum can be somewhere else. Or it might not have a zero derivative at all(adsbygoogle = window.adsbygoogle || []).push({});

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# Conerning word problems

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