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![Testing critical points for local extrema | Critical points and graphing with calculus | Khan Academ](https://www.iarticlesnet.com/pub/img/site/s_08.jpeg)
Testing critical points for local extrema | Critical points and graphing with calculus | Khan Academ
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日期:2024-07-13
You cannot always tell from the graph. You might get a rough approximation of where the max or min is, but you need the derivative to check the exact value. Also, if you have max and min quite close to each other the graph can look like it has fewer max a...看更多