verges. 25. k=0 28. Use any method to determine whether the series con- 33. k! *k!10* 3k k=1 k 31. k3 + 1 k=1" | k= 1 26. 2k + 1 k=1 29. 150 e-k k=1 1 k(k + 1) 32. k=1 34. k=1 27. k=1 30. k=1 4 2+3kk Sk k2 k3 + 1 2+(-1)* 54 he used ) 35. 37. 401 40. IM8 IM8 IM8 k=1 2 + k (k+1) 1 43. k=1 1 1 + k k! ek 1 4+2-k 38. 41. k=0 44. k=1 36. k! kk k=1 (k+4)! 4!k!4k k lnk k + 1 4+ cos x k 3 39. In k ek k=1 8 42. (x + 1)^ k+ k=1 8 45. k=1 tan k k -