Find the interval of convergence of 00 x3n+7 Σ In(n) n=2 (Use symbolic notation and fractions where needed. Give your answers as intervals in the form (*, *). Use symbol co for infinity, U for combining intervals, and appropriate type of parenthesis " (", ") " , " [" or "] " depending on whether the interval is or closed. Enter DNE if interval is empty.) open

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