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Show that E(r(r + 1) =- n(n + 1)(n + 2), n E N.

Show that E(r(r + 1) =- n(n + 1)(n + 2), n E N.

College Algebra
College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter9: Sequences, Probability And Counting Theory
Section9.1: Sequences And Their Notations
Problem 71SE: Prove the conjecture made in the preceding exercise.
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Show that ,(r(r + 1) = n(n + 1)(n + 2), n E N. r=1
Transcribed Image Text:Show that ,(r(r + 1) = n(n + 1)(n + 2), n E N. r=1
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