number of terms in multinomial exapansion
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Determine the number of terms in the expansion of $(a_1+a_2+a_3+....+a_n)^m$ where $m,n$ are positive integers.
Re: number of terms in multinomial exapansion
HINT 1
HINT 2
- What is the value of the contour integral around Western Europe?
- Zero.
- Why?
- Because all the poles are in Eastern Europe.
Revive the IMO marathon.
- Zero.
- Why?
- Because all the poles are in Eastern Europe.
Revive the IMO marathon.