Find the interval of convergence for the given power series.\\ $\sum_{n=0}^{\infty} \frac{(n+1)(x-3)^n}{n^2(2^n)}$ Oa. $1 \le x < 5$ Ob. $0 < x \le 2$ Oc. $2 \le x < 5$ Od. $1 < x \le 3$ Clear my choice
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Using the ratio test, we have: lim (n->∞) |((n+2)(x-3)^(n+1))/(n^2 * 2^n)| / |((n+1)(x-3)^n)/(n^2 * 2^n)| = lim (n->∞) |(n+2)(x-3)/(n+1)| = |x-3| For the series to converge, the ratio must be less than 1: |x-3| < 1 This gives us the radius of convergence as 1, Show more…
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