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Math Help - taylor series

  1. #1
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    taylor series

    I need to find out what the taylor series expansion is for (R^2-x^2)^(1/2) R is just a constant? I have looked everywhere and I can't seem to find it.
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  2. #2
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    Quote Originally Posted by nertil1 View Post
    I need to find out what the taylor series expansion is for (R^2-x^2)^(1/2) R is just a constant? I have looked everywhere and I can't seem to find it.

    (R^2-x^2)^{\frac{1}{2}} =  R \left( 1- \left( \frac{x}{r} \right)^2 \right)^{\frac{1}{2}}

    I presume you know the binomial expansion.

    Bobak
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