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Math Help - logs help i think its correct??

  1. #1
    Newbie
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    logs help i think its correct??

    my online hw says its still wrong and i dont understand why


    log p^3/log p^7


    log(p^3)-log(q^7)


    -7logQ+3logP


    the directions are expand as much as possible, then replace each log(P)with X and each log(Q) with a Y.

    so i did and i got -7y+3x and ive played around with the signs


    after the 1 post i dont get the order?
    Last edited by bharriga; April 24th 2008 at 09:24 AM.
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  2. #2
    Super Member flyingsquirrel's Avatar
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    Hi

    It is wrong because \frac{\ln p^3}{\ln q^7} \neq \ln p^3  -\ln q^7. The only thing which might be useful to expand (a little ) that expression is \ln x^y = y\ln x.
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