dx bx 2b x ax b 17. ax b dx = 2 ax b b dx x x ax b 18. ax x2 b dx = ax b a dx x 2 x ax b (三)含有 x2 a 2 的积分 dx 1 x 19. x2 a2 = a arctan a C dx x 2n 3 dx 20. ( x2 a 2 )n = 2( n 1)a 2 ( x 2 a2 )n 1 2( n 1)a 2 ( x 2 a 2 )n 1 mn mn = 1 cosm 1 x sinn 1 x n 1 cosm x sinn 2 xdx mn mn 欢迎下载 8 — 100. sin ax cosbxdx = 1 cos(a b)x 1 cos(a b) x C 2( a b) 2( a b) 101. sin ax sin bxdx = 1 sin( a b) x 常 用积分 公式 (一)含有 ax b 的积分 ( a 0 ) 1. dx = 1 ln ax b C ax b a 2. ( ax b) dx = 1 (ax b) 1 C ( 1) a( 1) 3. x ax dx = b 1 a2 ( ax b b ln ax b) C 4. x2 ax dx b = 1 a3 1 (ax 2 b) 2 2b (ax = x arccos x a a a2 x2 C 117. x arccos x dx = ( x 2 a2 x )arccos x2 a 2 x C a 24 a4 118. x2 arccos x dx = x3 arccos x 1 ( x2 2a 2) a2 x2 C 87. sec xdx = ln tan( x ) C = ln secx tan x C 42 88. csc xdx = ln tan x C = ln cscx cot x C 2 89. sec2 xdx = tan x C 90. csc2 xdx = cot x C 91. secx tan xdx = secx C (十)含有 x a 或 ( x a)( b x) 的积分 xb 79. x a dx = (x b) x a (b a)ln( x a xb xb x b) C 80. x a dx = (x b) x a (b a)arcsin x a C bx bx bx 81. dx = 2arcsin x a C ( a b) (x a)( b x) dx 1 b 107. a2 cos2 x b2 sin2 x = ab arctan( a tan x) C (a2 b2 ) 108. dx a2 cos2 x b2 sin2 = 1 ln x 2ab b tan x b tan x a a C 1 1 109. xsin axdx = a2 sin ax x cosax a bx 2x a b (b a)2 xa 82. ( x a)( b x)dx = ( x a)( b x) arcsin C 4 4 bx (十一)含有三角函数的积分 (a b) 欢迎下载 7 — 83. sin xdx = cos x C 84. cos xdx = sin x C 85. tan xdx = ln cosx C 86. cot xdx = ln sin x C 3 — 35. x2 dx = x x2 a 2 x2 a2 2 a2 ln( x 2 x2 a2 ) C 36. 2 x dx = 2 23 (x a ) x ln( x 2 2 xa x2 a2 ) C 37. dx = 1 ln x2 a 2 a C x x2 a2 a x 38. dx = x2 x2 a2 x2 a2 a2x C 39. x2 a2dx = x x2 (九)含有 ax2 bx c (a 0) 的积分 73. dx 1 = ln 2ax b 2 a ax 2 bx c C ax2 bx c a 欢迎下载 6 — 74. 2 ax bx cdx = 2ax b 2 ax bx c 4a 4ac b2 ln 2ax b 2a ax2 bx c C 8 a3 75. x 1 dx = ax2 bx c ax2 bx c a b ln 2ax b 2 a ax2 bx c C 2 a3 8 8 a 69. x a 2 x 2dx = 1 (a 2 x2 )3 C 3 70. x 2 a 2 x2 dx = x (2 x2 a 2) a 2 x2 a4 x arcsin C 8 8 a 71. a2 x2 dx = a2 x2 a a ln x a2 x2 C x 72. a2 x2 x2 dx = a2 x2 x arcsin C x a x2 a2 C 56. x 2 x 2 a2 dx = x (2 x 2 a 2) x 2 a 2 8 a4 ln x 8 x2 a2 C 57. x2 a2 dx = x2 a2 a a arccos C x x 58. x2 x2 a 2 dx = x2 a 2 ln x x x2 a2 C (八)含有 a2 x2 (a 0) 的积分 1 a tan ln 2 b2 a 2 x a tan b b b2 a2 b2 a2 C ( a2 b2 ) 2 105. dx 2 = a b arctan( a b tan x ) C 2 2 (a b ) a bcos x a b a b ab 2 x 106. dx =1 a b ln tan 2 a bcos x a b b a x tan 2 ab ba C ab ba a2 a2 ln( x 2 2 x2 a2 ) C 40. ( x2 a2 )3 dx = x (2 x2 5a 2) x2 a 2 3 a4 ln( x 8 8 41. x x2 a2dx = 1 2 (x 23 a) C 3 x2 a2 ) C 42. x 2 x 2 a2 dx = x (2 x 2 a 2) x 2 a 2 8 a4 ln( x n n dx 1 cos x n 2 dx sin n x = n 1 sinn 1 x n 1 sinn 2 x dx = 1 sin x n 2 dx cosn x n 1 cosn 1 x n 1 cosn 2 x cosm xsin n xdx = 1 cosm 1 xsin n 1 x m 1 cosm 2 x sinn xdx c 2a bx c b dx 2a ax 2 bx c (六)含有 x2 a2 (a 0) 的积分 31. dx x = arsh x2 a2 a C1= ln( x x2 a2 ) C 32. dx = x C (x2 a2)3 a2 x2 a2 33. x dx = x2 a2 C x2 a2 34. x dx = (x2 a2)3 1 C x2 a2 欢迎下载 b )2 = 1 b( ax b) 1 ax b b2 ln x C (二)含有 ax b 的积分 10. ax bdx = 2 (ax b)3 C 3a 11. x ax bdx = 2 15a 2 (3ax 2b) (ax b) 3 C 12. x2 ax bdx = 2 105a 3 (15a 2 x 2 12 abx 8b2 ) (ax b)3 C 13. C 110. x2 sin axdx = 1 x2 cosax a 2 a2 x sin ax 2 a3 cosax C 111. x cos axdx = 1 a2 cos ax 1 x sin ax a C 112. x2 cosaxdx = 1 x2 sin ax a 2 a2 x cosax 2 a3 sin ax C (十二)含有反三角函数的积分(其中 a 0 ) b) 1 dx 2b ax2 b (五)含有 ax2 bx c ( a 0) 的积分 29. dx ax2 bx = c 2 arctan 2ax b C 4ac b2 4ac b2 1 2ax b ln b2 4ac 2ax b b2 4ac b2 4ac (b 2 C (b2 4ac ) 4ac ) 30. ax 2 x bx dx = 1 ln ax2 1 sin(a b)x C 2( a b) 2(a b) 102. cosax cosbxdx = 1 sin( a b)x 1 sin( a b) x C 2( a b) 2(a b) x 103. dx = 2 a tan b arctan 2 C a bsin x a2 b2 a2 b2 (a2 b2) x 104. a dx = bsin x dx = 1 arccos a C x x2 a 2 a x 52. dx = x2 x2 a2 x2 a2 a2x C 53. x2 a2dx = x x2 a2 a2 ln x 2 2 x2 a2 C 54. ( x2 a2 )3 dx = x (2 x 2 5a 2) x2 a 2 3 a4 ln x 8 8 55. x x2 a 2dx = 1 (x 2 a 2)3 C 3 8 x2 a2 ) C 43. x 2 a 2 dx = x 2 a 2 a ln x 2 a 2 a C x x 44. x2 x2 a 2 dx = x2 a2 ln( x x x2 a2 ) C (七)含有 x2 a2 (a 0) 的积分 45. dx = x arch x x2 a2 x a C1 = ln x x2 a2 C x2 2 dx = x ax b a b dx a ax2 b 2 25. dx x(ax 2 = b) 1 2b ln x ax 2 b C 26. dx x 2(ax2 = b) 1 bx a dx b ax2 b 27. dx x 3(ax2 a ax 2 b b) = 2b2 ln x2 1 2bx2 C 28. dx (ax 2 b) 2 = x 2b( ax2 b) b2 ln ax b C 5. dx = 1 ax ln b C x( ax b) b x 6. dx x2 (ax = b) 1 bx a ax b b2 ln x C 7. ( ax x b) 2dx = 1 a2 (ln ax b b )C ax b 8. x2 (ax b) 2dx = 1 a3 ( ax b 2b ln ax b b2 )C ax b 9. dx x( ax 92. csc x cot xdx = cscx C 93. 94. 95. 96. 97. 98. 99. sin2 xdx = x 1 sin 2x C 24 cos2 xdx = x 1 sin 2x C 24 sinn xdx = 1 sinn 1 xcos x n 1 sinn 2 xdx n n cosn xdx = 1 cosn 1 x sin x n 1 cosn 2 xdx dx 1 x a 21. x2 a 2 = 2a ln x a C (四)含有 ax2 b(a 0) 的积分 1 a arctan x C 22. dx ax 2 = b ab 1 b ax b ln 2 ab ax b ( b 0) C (b 0) 23. x ax 2 dx = 1 ln ax2 b 2a b C 欢迎下载 2 — 24. x x arcsin C (a2 x2)3 a2 x2 a 65. dx = 1 ln a x a2 x2 a a 2 x2 C x 66. dx = x2 a 2 x2 a2 x2 a2x C 67. a2 x2dx = x a2 x2 a2 x arcsin C 2 2 a 68. (a 2 x2 )3 dx = x (5a 2 2 x2) a2 x2 3 a 4 arcsin x C 76. dx = 1 2ax b arcsin C c bx ax 2 a b2 4ac 77. c bx ax2 dx = 2ax b c bx ax2 b2 4ac arcsin 2ax b C 4a 8 a3 b2 4ac 78. x dx = 1 c bx ax2 b 2ax b arcsin C c bx ax 2 a 2 a3 b2 4ac x ax b dx = 2 3a 2 ( ax 2b) ax b C — 14. x2 ax b dx = 2 15a 3 (3a2 x2 4 abx 8b2 ) ax b C 15. dx = x ax b 1 ax b ln b ax b b C (b 0) b 2 arctan ax b C (b 0) b b 16. dx = x2 ax b ax b a 欢迎下载 9 — 113. arcsin xdx = x arcsin x a a 2 2 axC 114. x arcsin x dx = x2 ( a2 x )arcsin x a2 x2 C a 24 a4 115. x2 arcsin x dx = x3 arcsin x 1 (x2 2a 2 ) a 2 x2 C a 3 a9 116. arccos x dx 59. dx = arcsin x C a2 x2 a 60. dx = x C (a 2 x2 ) 3 a 2 a 2 x 2 欢迎下载 5 — 61. x dx = a2 x2 a2 x2 C 62. x dx = wenku.baidu.com 1 C (a2 x2)3 a2 x2 63. 64. x2 dx = x2 a 2 x a2 x arcsin C a2 x2 2 2 a x2 dx = 46. dx = x C (x2 a2)3 a2 x2 a2 47. x dx = x2 a 2 C x2 a2 欢迎下载 4 — 48. x dx = (x2 a2)3 1 C x2 a2 49. 50. x2 dx = x 2 x 2 a a2 ln x x2 a2 2 2 x2 dx = (x2 a2)3 x ln x x2 a2 2 2 xa C x2 a2 C 51.