Find the interval of convergence for ∑n=1∞(x−1)nn23n\sum_{n=1}^{\infty} \frac{(x-1)^n}{n^2 3^n}∑n=1∞n23n(x−1)n.
(−4,2)(-4, 2)(−4,2)
[−2,4][-2, 4][−2,4]
[−4,2][-4, 2][−4,2]
(−2,4)(-2, 4)(−2,4)