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Math Help - Solve this 'e' question for x.

  1. #1
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    Solve this 'e' question for x.

    I am having more trouble with this then I probably should be, I just can't seem to figure it out. Its

    e^{-2x}-3e^{-x}=-2

    Thanks as always.
    Ryan.
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  2. #2
    MHF Contributor Also sprach Zarathustra's Avatar
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    Re: Solve this 'e' question for x.

    Quote Originally Posted by rushton View Post
    I am having more trouble with this then I probably should be, I just can't seem to figure it out. Its

    e^{-2x}-3e^{-x}=-2

    Thanks as always.
    Ryan.
    Substitute:

    e^{-x}=t so...
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  3. #3
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    Re: Solve this 'e' question for x.

    Of course, now you say that it is smacking me in the face. I tried other substitutions but not that one for some silly reason.

    Thanks a lot!
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