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Math Help - help with this logarithm problem

  1. #1
    Newbie
    Joined
    Dec 2008
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    help with this logarithm problem

    Ok simple problem.

    I need to solve this equation, and my answers generate a huge number. So I am confused.

    ln(y)=4.55*ln(x)-3.88

    my answers for the set from x=10 through 60, get answers quickly inot the 10s of millions for y. If I plug and chug, for x= 60 I get ln(y) =14.75, and thus y=2544049.

    Am I doing something wrong?

    thanks


    ps I posted elsewhere.
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  2. #2
    Member Mentia's Avatar
    Joined
    Dec 2008
    From
    Bellingham, WA
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    134
    Raise e to the power of both sides. You'll get:

    y = x^(4.55) * e^(-3.88)

    or

    x = (y*e^(3.88))^(1/4.55)


    I put my equation for y into my calculator and it spit out the same answers you have. Yep big values... but correct ones.
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  3. #3
    Newbie
    Joined
    Dec 2008
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    thanks mentia

    I figured that was the answert, I just didnt believe it as the answer sheet says the numbers should be aroun 10^4! Someone did a boo-boo!
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