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Math Help - [SOLVED] difficult algebric eq'

  1. #1
    hen
    Guest

    [SOLVED] difficult algebric eq'

    Hello!
    it looks like a very simple one:

    3^{(x/2)}+1=2^x

    as you can see x=2.

    the question is: find x. meaning, find it, as if you don't know that x=2. also don't prove x=2 is right, and don't prove it's the only one.
    I need to prove it analytically, and my brain is going mad because of that,
    can someone help?

    Thanks a lot.
    Last edited by Math Help; June 5th 2005 at 12:54 PM.
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  2. #2
    Site Founder Math Help's Avatar
    Joined
    Apr 2005
    Posts
    171

    Natural Log

    How about taking the natural log Ln of both sides?
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