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Math Help - Need LOGARITHM Help.

  1. #1
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    Wink Need LOGARITHM Help.

    Hello I have been trying this questions forever to no avail. Could anyone help me?

    A. Using the laws of logarithms, simplify x^-0.45 = 0.521 and evaluate for x [5 marks]


    B. Find the fifth root of 600 using logarithms. [4 marks]
    Last edited by meltinghero; November 24th 2013 at 04:00 AM.
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  2. #2
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    Re: Need LOGARITHM Help.

    Quote Originally Posted by meltinghero View Post
    Hello I have been trying this questions forever to no avail. Could anyone help me?

    A. Using the laws of logarithms, simplify x^-0.45 = 0.521 and evaluate for x [5 marks]


    B. Find the fifth root of 600 using logarithms. [4 marks]
    A) Hint: ln(x^{-0.45}) = -0.45~ln(x)

    B) This looks a bit ridiculous as you need a calculator either way, but start with ln(600^{1/5}).

    -Dan
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