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9. Use the root test to determine if the following series converge or diverge. DO a) -1in (In n)" b ) E 6" (n!)" n=2 C ) E n= 1 n=1 10. Determine the interval of convergence for the following series. a) > (22x)" b) E nx" n+10 c) d) n(2+2)" n=0 30 n= 1 1=0