Find the interval of convergence of the series. (Use symbolic notation and fractions where needed. Give your answers as intervals in the form (*, *). Use symbol oo for infinity, U for combining intervals, and appropriate type of parenthesis" (", ")", "[" or "]" depending on whether the interval is open or closed. Enter DNE if interva is empty.) x € Find the interval of convergence of the series. 8 (5x)" -8 (Use symbolic notation and fractions where needed. Give your answers as intervals in the form (*, *). Use symbol oo for infinity, U for combining intervals, and appropriate type of parenthesis" (", ")", "[" or "]" depending on whether the interval is open or closed. Enter DNE if interva is empty.) x € Find the interval of convergence of the series. (5x) n².8" (Use symbolic notation and fractions where needed. Give your answers as intervals in the form (*, *). Use symbol oo for infinity, U for combining intervals, and appropriate type of parenthesis" (".")", "[" or "]" depending on whether the interval is open or closed. Enter DNE if interva is empty.) XE