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Math Help - Why does sqrtAB over B become sqrt AB

  1. #1
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    Why does sqrtAB over B become sqrt AB

    How do I make a post solved please

    I know from using practical values this does happen but I don't understand were the extra B is cancelled out
    I will try again with LaTex



    THIS IS NOT CORRECT perhaps some could show me what is wrong
    frac\{\sqrt{AB}{B}


    I still can not work LaTex out ! . I have been trying for 5 hours !
    -----------------------------------------------------------------
    This was muy original question
    Here is a paint jobbyWhy does sqrtAB over B become sqrt AB-why.png
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  2. #2
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    Re: Why does sqrtAB over B become sqrt AB

    Here is the correct LaTeX.
    [TEX]\frac{\sqrt{AB}}{B} [/TEX] gives \frac{\sqrt{AB}}{B} .

    \frac{\sqrt{AB}}{B}=\sqrt{\frac{AB}{B^2}}=\sqrt{ \frac{A}{B}}


    BTW: The symbol \boxed{\Sigma} on the tool bar gives the TeX wraps.
    Last edited by Plato; June 27th 2012 at 07:28 AM.
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  3. #3
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    Re: Why does sqrtAB over B become sqrt AB

    Hello, TeslaCoil!

    \text{Why does }\:\frac{\sqrt{AB}}{B} \:=\:\sqrt{\frac{A}{B}}\;?

    \frac{\sqrt{AB}}{B} \;=\;\frac{\sqrt{A}\cdot\sqrt{B}}{\sqrt{B}\cdot \sqrt{B}} \;=\; \frac{\sqrt{A}}{\sqrt{B}} \;=\;\sqrt{\frac{A}{B}}
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  4. #4
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    Re: Why does sqrtAB over B become sqrt AB

    Don't forget to insert \ before any command (\frac, \int, \epsilon, \hspace).


    For example, \frac{\sqrt{AB}}{B} gives \frac{\sqrt{AB}}{B} and \sqrt{\frac{A}{B}} gives \sqrt{\frac{A}{B}}
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  5. #5
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    Re: Why does sqrtAB over B become sqrt AB

    Thanks that was a nice answer
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  6. #6
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    Thumbs up Re: Why does sqrtAB over B become sqrt AB

    That was a brilliant answer
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