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Math Help - Problems with indices

  1. #1
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    Problems with indices

    Could someone please help me with this?



    ((a^4)b)/(c^2)^^-1/2





    Thank you!
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  2. #2
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    Not much you can do from there...

    \left(\frac{a^4b}{c^2}\right)^{-1/2}

    Is this thing you wanna reduce?
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  3. #3
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    Yes, I am sorry I do not know how to use tags.


    I tried to take away the fractions by multiplying by a^2 and c, but I couldn't
    get the right answer.
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  4. #4
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    See the LaTeX Tutorial

    Now, we have that \left(\frac{c^2}{a^4b}\right)^{1/2}=\frac c{a^2\sqrt{b}}

    Does that make sense?
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  5. #5
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    Yes that makes sense, but according to my math book the answer is \frac{c\sqrt{b}}{a^2 b} .
    Last edited by Coach; September 4th 2007 at 10:37 AM.
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  6. #6
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    Quote Originally Posted by Coach View Post
    Yes that makes sense, but according to my math book the answer is \frac{c\sqrt{b}}{a^2 b} .
    What's the matter?

    Multiply numerator and denominator by \sqrt b to my answer and you'll get the desired.
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