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Math Help - linearizing log equations

  1. #1
    Member Veronica1999's Avatar
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    linearizing log equations

    Could I get some help on the attached problem?
    Thanks.

    The attachment has my work on it.
    Attached Thumbnails Attached Thumbnails linearizing log equations-571.jpg  
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  2. #2
    MHF Contributor Siron's Avatar
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    Re: linearizing log equations

    The problem is in the beginning. Because if you take the logarithm of the two sides then the equation becomes:
    \log(y)=\log(5\cdot 2^x+8)
    But there's no rule for \log(a+b)=...?.
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  3. #3
    Member Veronica1999's Avatar
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    Re: linearizing log equations

    Then how can the difficulty be avoided?
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