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Math Help - [SOLVED] solving (another) system

  1. #1
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    [SOLVED] solving (another) system

    Would someone be so kind as to show me how I would go about solving this?

    y-e^{-x} = 1
    y-lnx = 3
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  2. #2
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    Quote Originally Posted by satis View Post
    Would someone be so kind as to show me how I would go about solving this?

    y-e^{-x} = 1
    y-lnx = 3
    By subtracting one equation from the other, you can eliminate the y.


    So e^{-x} - \ln{x} = 3 - 1

    e^{-x} - \ln{x} = 2.


    I suspect you will need to use technology to solve for x in this case.
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  3. #3
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    I've always wondered about the phrase "use technology". A pencil and paper are "technology"!
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    Quote Originally Posted by HallsofIvy View Post
    I've always wondered about the phrase "use technology". A pencil and paper are "technology"!
    Maybe I should say "use a computer that has a built-in numerical method that could be done by pencil and paper but because of time constraints, most people just reach for the computer..."
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