Problem #9: Which of the following series converge? ∞ (i) Σ(-1)n-1 e-n/7 n=1 (ii) Σ (-1)¹ - (-1)" n=1 (iii) n=1 Problem

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Problem #9: Which of the following series converge? ∞ (i) Σ(-1)n-1 e-n/7 n=1 (ii) Σ (-1)¹ - (-1)" n=1 (iii) n=1 Problem #9: Select n 72² +5 (A) (i) and (ii) only (B) (i) and (iii) only (C) all of them (D) (ii) and (iii) only (E) (i) only (F) (iii) only (G) (ii) only (H) none of them Just Save (−1)n+1 cos(1/n) Submit Problem #9 for Grading Problem #9 Attempt #1 Attempt #2 Your Answer: Your Mark: Attempt #3