4. Prove or disprove by giving a counterexample: (a) If (xn) and (Yn) are divergent sequences then (xn + Yn) diverges also. (b) If (xn) and (yn) are divergent sequences then (xn Yn) diverges also. (c) If (xn) and (¤n · Yn) are convergent sequences then (yn) converges also.
4. Prove or disprove by giving a counterexample: (a) If (xn) and (Yn) are divergent sequences then (xn + Yn) diverges also. (b) If (xn) and (yn) are divergent sequences then (xn Yn) diverges also. (c) If (xn) and (¤n · Yn) are convergent sequences then (yn) converges also.
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.2: Arithmetic Sequences
Problem 68E
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