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Math Help - single logarithm

  1. #1
    Newbie
    Joined
    Jan 2010
    Posts
    17

    single logarithm

    I need help making ln2x+3(lnx-lny) a single logarithm
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  2. #2
    Junior Member
    Joined
    Mar 2010
    Posts
    44
    Hi bastropgarl,

    1) \log_{a}{\left(b.c\right)}\;=\;log_{a}{b}+log_{a}{  c}

    2) log_{a}{\left(\frac{x}{y}\right)}\;=\;log_{a}{x}-log_{a}{y}

    3) x\log_{a}{y}\;=\;\log_{a}{y^x}

    Try to use these rules. If you still can not solve, write again.
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