Prove & [a+(i-1)d] =na + dn(n-1) where a and d are fixed real numbers. 2 n Use the properties of summation (indicate) and the result that Σ = i= n(n+1) 2

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.2: Arithmetic Sequences
Problem 44E
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Prove & [a+(i-1)d] =na + dn(n-1) where a and d are fixed real numbers.
2
i=1
Use the properties of summation (indicate) and the result that
=W5
(1
()
n(n+1)
2
Transcribed Image Text:Prove & [a+(i-1)d] =na + dn(n-1) where a and d are fixed real numbers. 2 i=1 Use the properties of summation (indicate) and the result that =W5 (1 () n(n+1) 2
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