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Math Help - calculus

  1. #1
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    calculus

    f(x)=x^2+7x+12

    find the critical numbers
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  2. #2
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    Quote Originally Posted by sdaniels229 View Post
    f(x)=x^2+7x+12

    find the critical numbers
    You want f'=0. Just solve for x then. Are you doing partial derivatives or just regular ones?
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  3. #3
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    that's all the problem said

    that's all the problem said was to find the critical number
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  4. #4
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    To find the critical numbers, take the derivative of the function
    And then find the value(s) for x

    So take the derivative of:
    <br />
f(x) = x^2 + 7x + 12<br />

    And then solve for x
    This will give you the critical numbers of the function
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  5. #5
    MHF Contributor Mathstud28's Avatar
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    Quote Originally Posted by qzno View Post
    To find the critical numbers, take the derivative of the function
    And then find the value(s) for x

    So take the derivative of:
    <br />
f(x) = x^2 + 7x + 12<br />

    And then solve for x
    This will give you the critical numbers of the function
    Critical numbers are the numbers that make the derivative zero and undefined.
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  6. #6
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    Just solve x^2+7x+12=0
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  7. #7
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    x is -3 or -4
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