Concept
Version 8
Created by Boundless
Concavity and the Second Derivative Test
![Maxima and Minima](../../../../../../../../../figures.boundless-cdn.com/17944/raw/extrema-example-original.jpg)
Maxima and Minima
Telling whether a critical point is a maximum or a minimum has to do with the second derivative. If it is concave-up at the point, it is a minimum; if concave-down, it is a maximum.
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