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Idealist Group Title

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?

  • one year ago
  • one year ago

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  1. sirm3d Group Title
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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.

    • one year ago
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    Thank you.

    • one year ago
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spraguer (Moderator)
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is replying to Can someone tell me what button the professor is hitting...

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