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Math Help - Exonential Equations

  1. #1
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    Exonential Equations

    If Y = Ae^-kt

    and Y = 19.6 when T = 2
    and Y = 19.02 when T = 5

    Find the value of the constants A and k
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  2. #2
    Moo
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    Hello,

    Just replace it in the equation...

    19.6=Ae^{-2k}
    19.02=Ae^{-5k}

    Then, you can divide the equations term by term

    -> \frac{19.6}{19.02}=\frac{e^{-2k}}{e^{-5k}}=e^{-2k+5k}=e^{3k}

    Can you continue ?
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