Lemma
EasyCurve sketching
Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §3.3 Second Derivatives: Bending and Acceleration, #10 · Calculus · Curve sketching

In 11–16 decide which stationary points are maxima or minima

If has seven inflection points, it has nine zeros.

In 11–16 decide which stationary points are maxima or minima.

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §3.3 Second Derivatives: Bending and Acceleration, #10

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