Show that for any r, n > 1, п! Σ = r". nį!n2!...n,! nį+n2+…+n,=n, n¡ 20 11 (

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.2: Arithmetic Sequences
Problem 38E
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Show that for any r, n > 1,
n!
Σ
= r".
... n. !
nį !n2!
ni+n2+…+n,=n, n¡ ¿0
The summation above runs over all (n1, n2 ..., nr) satisfying ni + n2 + · ··+ nr = n, n¡ 2 0.
Transcribed Image Text:Show that for any r, n > 1, n! Σ = r". ... n. ! nį !n2! ni+n2+…+n,=n, n¡ ¿0 The summation above runs over all (n1, n2 ..., nr) satisfying ni + n2 + · ··+ nr = n, n¡ 2 0.
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