Following our 3 step method: Step 1: find f ″ ( x) by successive differentiation f ′ ( x) = c o s ( x) differentiating once more: f ″ ( x) = − s i n Step 2: solve f ″ ( x) = 0. Since \f'' (x)=-sin (x)\), this

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The points of inflection of a function are the points at which its concavity changes. The concavity of a function is described by its second derivative, which will be equal to zero at the inflection

5 Ways to Find Inflection Points

Mistakes when finding inflection points: second derivative undefined. Mistakes when finding inflection points: not checking candidates. Analyzing the second derivative to find inflection

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