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Math Help - solving a log(a) equation

  1. #1
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    Exclamation solving a log(a) equation

    hi,


    Find a in terms of b, given that
    log3(a b2) = 5


    how do you sole this? please help, thanks!
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  2. #2
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    Quote Originally Posted by [nuthing] View Post
    hi,


    Find a in terms of b, given that
    log3(a b2) = 5


    how do you sole this? please help, thanks!
    From basic log rules: log3(a b2) = log3(a) + log3(b2) = log3(a) + 2log3(b). Use it.
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  3. #3
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    Quote Originally Posted by [nuthing] View Post
    hi,


    Find a in terms of b, given that
    log3(a b2) = 5


    how do you solve this? please help, thanks!
    If the "3" is the base of the logarithm, then you just slide it over to the other side to get

    (whatever's in brackets)=3^5

    Then use basic algebra to get "a" in terms of "b".
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