Sign Diagrams

[vapid hedge]

I just need a little help with understanding these more. (Inflection points and rel. max/min)

[gilded knoll]

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[unreal orbit]

inflection points are the points where the concavity of a graph is 0, i.e. g''(t) = 0

[vapid hedge]

I'm not sure which graph of the three I'd look at for inflection points though

Same for max/min

[unreal orbit]

I've clearly stated it...