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Math Help - Quick Q about intervals

  1. #1
    Super Member Deadstar's Avatar
    Oct 2007

    Quick Q about intervals

    If a closed interval (in R) has positive length does that mean that it can be written out like (a_1 , a_2 , a_3 , ... , a_n)
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  2. #2
    MHF Contributor

    Aug 2006
    It always dangerous to answer a question about notation. It is not always standard.
    Usually a closed interval means: a < b\,\& \,[a,b] = \left\{ {x:a \leqslant x \leqslant b} \right\}.
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