3. Let a₁ = 2, a2 = 1, and for each natural number n > 2, let an 2an-1-an-2. Prove that for all natural numbers n, an = 3-n.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.2: Arithmetic Sequences
Problem 52E
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3. Let a₁ = 2, a2 = 1, and for each natural number n > 2,
let an = 2an-1-an-2. Prove that for all natural numbers n, an = 3-n.
Transcribed Image Text:3. Let a₁ = 2, a2 = 1, and for each natural number n > 2, let an = 2an-1-an-2. Prove that for all natural numbers n, an = 3-n.
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