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Math Help - Squiggle arrow... what is it?

  1. #1
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    Squiggle arrow... what is it?

    Hi. I've met a symbol like this: File:U+21DC.gif - Wikipedia, the free encyclopedia in an equation, at the end of it. In that equation, it was downwards. What is it used for? Thanks!
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  2. #2
    Super Member TheChaz's Avatar
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    What was the equation? It might be a contradiction...
    Contradiction - Wikipedia, the free encyclopedia
    (see heading "Symbolic representation")

    Without more context, I'm just shootin in the dark!
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  3. #3
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    Thank you for your answer, I'll scan it later and post the image of it.
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  4. #4
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    g(r)=p_k\left [ \frac{nr(1+r)^n}{(1+r)^n-1} -1  \Downarrow \ \right ]

    Where I've put \Downarrow , there is that squiggle arrow.

    The function in square brackets is monotonically increasing function of r.
    Thanks again.
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