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Math Help - Exponential & Logarithmic Equations

  1. #1
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    Exponential & Logarithmic Equations

    3e^(4x)-9e^(2x)-15=0
    I tried to solve this question and I couldn't finish solving it. Can you please show me how i would do this?
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  2. #2
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    Re: Exponential & Logarithmic Equations

    Quote Originally Posted by paigesisco View Post
    3e^(4x)-9e^(2x)-15=0
    I tried to solve this question and I couldn't finish solving it. Can you please show me how i would do this?

    Can you solve 3y^2-9y-15=0~?
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  3. #3
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    Re: Exponential & Logarithmic Equations

    I have tried but my answer comes out wrong, can you please help?
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    Re: Exponential & Logarithmic Equations

    Quote Originally Posted by paigesisco View Post
    I have tried but my answer comes out wrong, can you please help?
    When solving it plato's way did you remember to find x after you found the value(s) of y?
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  5. #5
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    Re: Exponential & Logarithmic Equations

    Yes i did that. Can you solve the equation out for me fully so that i can understand it in former questions
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  6. #6
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    Re: Exponential & Logarithmic Equations

    Quote Originally Posted by paigesisco View Post
    Yes i did that. Can you solve the equation out for me fully so that i can understand it in former questions

    You should get e^{2x}=\frac{3+\sqrt{29}}{2}.
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