Which of the following series is convergent?(1) t0 cos(n)5n+1(II) En=15+2n²(111) En n0.7The series (II)The series (I) and (II).This optionThis optionThe series (III)The series (I)This optionThis option

1) ∑n=1∞ cos(nπ)5n+1 cos(nπ) = (-1)n ∑n=1∞ (-1)25n+1 Here limn→∞ 15n+1 = 0 and 15n+1 is…

Answered: Which of the following series is…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Which of the following series is convergent? (1) to cos(nn) 5n+1 (1) E (II) E n? !5+2n² (III) E +00 n=1 n05 n0.7 The series (II) The series (I) and (II).