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Multinomial Expansion

  1. Sep 5, 2009 #1
    Hello,

    Is there a simple programmable form of multinomial expansion, like a summation with explicit and clear lower and upper limits?

    Regards
     
  2. jcsd
  3. Sep 7, 2009 #2

    mathman

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    Gold Member

    It is a little messy. The general term is (n!/[m1!m2!...mk!])a1m1a2m2...akmk. The sum limits are all mj >=0 and m1+m2+...+mk=n.

    To simplify typing all aj and mj should be thought of as being subscripted. k is the total number of variables.
     
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