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College Algebra  /  Alg 358  ·  Atom · ~20 seconds

Turning Points

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A polynomial of degree n has at most n − 1 turning points — the places where rising hands off to falling or back.

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x³ − 3x + 2, degree 3, turns twice — near x = −1 and x = 1 — and can never turn a third time.

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