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Math Help - Log problem

  1. #1
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    Log problem

    I have to evaluate


    Log1745.3 to four decimal places

    I don't know how
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  2. #2
    Junior Member
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    Log 45.3
    ---------- = 1.3459
    Log 17



    to four decimal places
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  3. #3
    Behold, the power of SARDINES!
    TheEmptySet's Avatar
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    Quote Originally Posted by Biddyboots View Post
    I have to evaluate


    Log1745.3 to four decimal places

    I don't know how
    use the change of base formula and a calculator

    \log_ab=\frac{\log(b)}{\log(a)}

    so for yours

    \log_{17}45.3=\frac{\log(45.3)}{\log(17)}=\frac{1.  65609}{1.23044} \approx 1.34593
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