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Math Help - [SOLVED] local max and min

  1. #1
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    [SOLVED] local max and min

    f(x)=(x^2 - 3 ) e^x

    I get local max at x = -3 and x = 1

    I cannot however, plot this point. How can I find y?
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  2. #2
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    Quote Originally Posted by thekrown View Post
    f(x)=(x^2 - 3 ) e^x

    I get local max at x = -3 and x = 1

    I cannot however, plot this point. How can I find y?
    Plug in your x values and solve.
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  3. #3
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    I get math syntax error when I try to plug -3 into the original equation.
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  4. #4
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    f(-3)=[(-3)^2-3]e^{-3}=(9-3)e^{-3}=\frac{3}{e^3}
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  5. #5
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    Well I get 9-3 not 9-6. Can you double check your answer?

    I see what I did wrong, I guess you can't input e^-3 in a calculator. Now I just tried 1/e^3 and still got syntax error.

    Is it possible this is not computable?
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  6. #6
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    \frac{1}{e^3}=.049787068368...
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  7. #7
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    Got it. Thanks.
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