【生肉】是微分就做100道 | 100 Derivatives (blackpenredpen)

The_Outliers:
Time stamps! Q1. 2:42 Q2. 6:30 Q3. 11:40 Q4. 15:40 Q5. 18:38 Q6. 23:24 Q7. 27:08 Q8. 32:26 Q9. 36:41 Q10. 40:45 Q11. 44:05 Q12. 45:15 Q13. 49:01 Q14. 54:32 Q15. 56:30 Q16. 57:47 Q17. 1:02:15 Q18. 1:04:00 Q19. 1:10:14 Q20. 1:13:07 Q21. accidentally forgot to make Q21. Q22. 1:14:34 Q23. 1:19:00 Q24. 1:23:00 Q25. 1:28:00 Q26. 1:32:55 Q27. 1:37:55 *I meant to say 1/n!<1/n^2 for large enough n so series of 1/n! also converges. But the ineq I put down was incorrect (since sum 1/n! = e-1 = 1.71 but sum of 1/n^2 = 1.6). However, a better way to do this is to use the ratio test*. Q28. 1:40:20 Q29. 1:47:37 Q30. 1:54:45 Q31. 1:57:50 Q32. 2:09:22 Q33. 2:15:12 Q34. 2:21:10 Q35. 2:25:07 Q36. 2:30:29 Q37. 2:32:15 Q38. 2:38:30 Q39. 2:44:52 Q40. 2:49:00 Q41. 2:52:16 Q42. 3:01:20 Q43. 3:05:25 Q44. 3:15:02 Q45. 3:17:45 Q46. 3:24:00 Q47. 3:27:50 Q48. 3:30:40 Q49. 3:34:08 Q50. 3:37:44

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【回复】Q51. 3:42:24 Q52. 3:46:03 Q53. 3:50:13 Q54. 3:54:03 Q55. 3:58:04 Q56. 4:02:37 Q57. 4:07:05 Q58. 4:14:28 Q59. 4:17:25 Q60. 4:20:33 Q61. 4:28:50 Q62. 4:33:30 Q63. 4:42:06 Q64. 4:46:09 Q65. 4:54:40 Q66. 4:57:38 Q67. 5:03:01 Q68. 5:06:08 Q69. 5:13:24 Q70. 5:29:54 Q71. 5:31:05 Q72. 5:33:06 Q73. 5:34:26Q74. 5:35:52 Q75. 5:37:15 Q76. 5:38:58 Q77. 5:41:05 Q78. 5:44:00 Q79. 5:46:32
【回复】回复 @你的盾盾呀 :Q80. 5:49:15 Q81. 5:53:54 Q82. 5:57:10, mistake! The Sn formula should be 1/2-"1"/(n+2)! Q83. 6:08:05 Q84. 6:14:51 Q85. 6:17:07 Q86. 6:18:48 Q87. 6:21:03 Q88. 6:24:01 Q89. 6:28:54 Q90. 6:31:57 Q91. 6:38:17 Q92. 6:44:35 Q93. 6:49:33 Q94. 6:53:26 Q95. 6:55:40 Q96. 6:57:28 Q97. 7:00:38 Q98. 7:03:05 Q99. 7:06:23 Q100. 7:09:34 Q101. 7:12:45