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Idealist

  • 3 years ago

Find all points of inflection: f(x)=(1/12)x^4-2x^2+15. I know that f"(x)=x^2-4 but what to do after that? Is (2, 0), (-2, 0) the answer?

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  1. sirm3d
    • 3 years ago
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    to get the x-coordinate of the point of inflection, set the 2nd derivative to zero, and solve x. whatever x you get, sub it in f(x) to give you the y-coordinate.

  2. Idealist
    • 3 years ago
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    Thank you.

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