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5.6 Determining Concavity and Points of Inflection

AP Calculus AB

Concavity and Inflection Points

Concavity defined

Inflection points

Example 1: polynomial

Example 2: $f''(c) = 0$ but NOT an inflection point

Example 3: $f''$ DNE at inflection point

Concavity and linearization

Reading concavity from the graph of $f'$

Reading concavity from the graph of $f''$

Example 4: complete concavity analysis

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Vocabulary