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If a,,a,, a3,., a, are in HP, Prove that a,a, +a,a; +...+ a,.1 a, = (n - 1)a,a,.

If a,,a,, a3,., a, are in HP, Prove that a,a, +a,a; +...+ a,.1 a, = (n - 1)a,a,.

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section1.1: Real Numbers
Problem 52E
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If a,,a2,a3,.,a, are in HP, Prove that a,a, + a,a; +...+a,.1 a, =(n - 1)a,a,.
Transcribed Image Text:If a,,a2,a3,.,a, are in HP, Prove that a,a, + a,a; +...+a,.1 a, =(n - 1)a,a,.
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