Question 2 (-1)"n For positive integer n, let a, = 3n (a) Determine whether the sequence {an} is convergent. (b) If f(x) = £ a„x", specify the domain of f. n=1 (c) Based on your answer in Question...

Please answer b and c

Extracted text: Question 2 (-1)"n For positive integer n, let a, = 3n (a) Determine whether the sequence {an} is convergent. (b) If f(x) = £ a„x", specify the domain of f. n=1 (c) Based on your answer in Question 2(b), explain whether the series f(4) con- verges or diverges.