9. which of the following converge ? 2 ( 1- * ) ; 7. Determine the 17" degree Maclaurin polynomial M= 1 for : a) Xin (1+x ); bixcos(x? ); c ) xe; 100 100 n b ) 1+2X n ! n=D 8. Determine the radius and interval of convergence 3 for : a) n n n 3 x 3n 00 C ) V ( - 1 X 2 gn + 1 3 b ) U . n=0 1= 0 ( 2n+1 ) 2 d ) 2 d ) M n ! X 1= 0 13n + 100 2" ( n+1 ) ! CO n e) 13" n ! if ) (17 + 1 ) /3