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Math Help - Using Rules of indices

  1. #1
    Fenna
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    Using Rules of indices

    Hey im not such a mathes expert and would appreciate your help on some of the following questions if you could try to explain how to work them out if you can ill give you one of many

    Using the rules of indices, simplify the following and give your answers with positive indices where applicable. Show your working clearly.

    i)
    3-2 5-3 20
    ------------------
    3-3 5-2 2

    Also calculate log1195 without using a calculater.

    All helps appreciated
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  2. #2
    Global Moderator

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    You mean "indicies" as in primitive roots? A index is the exponent a primitive root has to be raised to to be congruent to a certain integer.
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  3. #3
    Grand Panjandrum
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    Quote Originally Posted by ThePerfectHacker
    You mean "indicies" as in primitive roots? A index is the exponent a primitive root has to be raised to to be congruent to a certain integer.
    No they mean "indices" as in "raised to a power". The question should
    read:

    "Using the rules of indices, simplify the following and give your answers
    with positive indices where applicable. Show your working clearly.

    i)
    \frac{3^{-2}.5^{-3}.20}{3^{-3}.5^{-2}.2}
    Also calculate log_{11}(95) without using a calculator."

    At least that's my guess at how the question should read.

    RonL
    Last edited by CaptainBlack; November 23rd 2005 at 09:31 AM.
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