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Thread: Easy way to remember logarithms?

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    DixieGirl is offline Squire
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    Question Easy way to remember logarithms?

    Is there any easy way to remember logarithms?

  2. #2
    tryingtesc is offline Minor Noble
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    Hey DixieGirl,

    Not to be a smart butt, but, practice, practice, practice.

    What "part" seems to be troubling you? Logs are used with unknown exponents, they are the inverse of exponentials.

    Practicing re-writing functions from exponential form (y=b^x) to logarithmic form (x=log b y) ,the base "b" should be subscript, can help.
    For example:
    Exp. Form---4=2^x into Log Form----x=log2 4 (the "2" should be subscript)

    Then the way to solve for "x" on the calculator is log4 divided by log2.

    When written on paper it is easy to remember to divide log4 by log2 because the log4 is "on top", just like fractions(division).

    ^ = raised to that exponent

    Which test are you preparing for? If Solving systems of equations containing logs, you will need more help than I have provided, and I suggest getting a tutor. If you just need refreshing, online resources should be enough to help. I do not know what sort of math background you have. Good Luck.

    Best Regards,
    Jason
    Last edited by tryingtesc; 07-27-2007 at 03:13 PM.

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    DixieGirl is offline Squire
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    Okay, thanks. I am really really dreading studying these!

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    Drummerboy is offline Knight / Dame
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    That's a good question. Princeton Review's ACT book has a little section on logarithms (page 139).

    Say a logarithm is log
    x 64 = 6. Just remember that the 6 on the right will be the exponent of the little "x". Then, use your calculator to see what number multiplied by itself six times equals 64. Hope this helps and is not more confusing!

    Click on link below for example picture if it does not show up on this page.

    Logarithm.JPG
    Last edited by Drummerboy; 07-27-2007 at 04:13 PM.

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    If you are taking College Mathematics you can skip this all together like I did and still passed with a 60.

    Quote Originally Posted by DixieGirl
    Is there any easy way to remember logarithms?
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    You're done? Congratulations on accomplishing so much in such a short amount of time! Best wishes for the future!

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    Welcome back! Will you be pursuing a degree in nursing?

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    Quote Originally Posted by DixieGirl
    Is there any easy way to remember logarithms?
    I'm preparing to take the CLEP Precalc exam. I also am studying logs. I wonder how much of the actual Precalc exam actually has to do with logs. Since I have a solid grasp of algebra and functions and some trig, I hope this will be sufficient.
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