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anonymous

  • 5 years ago

can anyone help me find the critical points of 2x^3-11x^2-8x+2 ? ty

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  1. shadowfiend
    • 5 years ago
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    First of all, take the derivative of it.

  2. anonymous
    • 5 years ago
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    mhm 6x^2 - 22x - 8

  3. anonymous
    • 5 years ago
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    then i know the points are -1/3 and 4, but my hw asks for it to be in point form. i tried plugging in these values to the original equation, but the answers are marked as wrong on my online hw

  4. shadowfiend
    • 5 years ago
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    So (-1/3, 91/27) is wrong?

  5. anonymous
    • 5 years ago
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    yeah i put (-1/3, 91/27) and (4,-78) and it said both were wrong

  6. shadowfiend
    • 5 years ago
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    Sorry, I *think* critical point should just be the X value.

  7. shadowfiend
    • 5 years ago
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    Have you tried just putting in -1/3 and 4?

  8. anonymous
    • 5 years ago
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    (The answers are to be points. Use parentheses in your answer(s). If there are no critical points, enter none .) **** copied from my homework

  9. shadowfiend
    • 5 years ago
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    Strange. I mean, those are right heh. No question.

  10. anonymous
    • 5 years ago
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    hm ok, im going to email my professor. thank you for your help!

  11. shadowfiend
    • 5 years ago
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    No problem!

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spraguer (Moderator)
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