Integration Problems to Work on in Preparation for the Technique Test February 10, 2003 1. R x sec2 x dx 2. R 4x+4 2x+1 dx 3. R 7xex dx 4. R 5. R 10 6. R9√ 7. R 8. R 9. R 10. R 11. R 12. R 13. R 14. R 28. R ex e2x −4 dx 29. R e2x e2x −4 dx 30. R ln 3 31. R x+5 x2 −2x−3 32. R x2 +3 x2 +1 33. R x2 ex dx 34. R 3 tan(2x) dx 35. R etan x sec2 x dx 36. R cos x sin(2 sin x) dx 37. R − ln(1+x) (1+x)2 dx 38. R 2 x2 +2x+1 dx 39. R 1 x(x+2) dx 40. R x2 (1−9x2 )(3/2) 41. R 2 dx x2 +6x+9 0 3 −10 1 sin(x ) dx 4 + 3x dx x arctan xdx ex sin x dx x ln x dx sin2 (7x) dx 3 2 4x +3x +2x+1 x4 +x3 +x2 +x+1 dx 6x+3 (x−1)(x−2)(x−3) dx x √ ex e +4 dx dx dx 3 2 x cos(x ) dx 2 x cos x dx dx ln x dx 45. 3x cos x dx √ R √ (x x2 + 2x + x2 + 2x )dx R e sin(ln(x)) dx x 1 R sin(ln(x)) dx R 3 x2 (x2 +9) dx (ln x)2 dx 46. R x3 x2 +1 dx 47. R dx x3 +x 48. R sin(x)dx cos2 (x)−5 cos(x)+4 x ln(x2 + 1) dx 49. R e√ x dx x R x2 −1 x2 +1 dx 50. R 2x ex dx 25. R x2 +1 x2 −1 dx 51. R x+1 x2 +1 dx 26. R x x4 +1 dx 52. R 2xe(x+1) + 2e(x+1) dx 27. R √ x x2 +1 53. R 2−3x (x2 (x−1)) dx 15. R 2x+1 x2 +4x−5 dx 16. R cos2 x dx 17. R x3 cos x2 dx 43. 18. R cos3 x dx 44. 19. Re 20. R 21. R 22. R e3 23. R 24. 1 (ln x)2 x e 42. dx 1 x ln x dx √ dx 1 2 2 54. R √ x dx 1−x2 55. R x sin((x + 1)(x − 1)) dx 56. R x5 −1 x−1 dx 57. R 2x((x2 + 1)2 + 1)2 dx 58. R 1/2 59. Re 60. R sin x cos x dx 61. R dx x ln x ln(ln x) 3 √x dx 1−x2 −1/2 1 x2 ln x dx sin3 (2x) dx R √ 63. ln x dx R 64. xx+1 2 −4 dx R ex +x 65. e dx R cos(x) 66. 1+sin(x) dx 62. R 67. R x3 +1 x2 −1 68. R 1 x(x2 +a2 ) 69. R x (x2 −a2 )3/2 70. R x(ln x)2 dx 71. R1 72. R 73. R 74. R1 75. R2 76. R √ x dx x2 +3 77. R eln x dx 78. R (x−1)dx (x2 +1)(x+1) 79. R cos(x) ln(sin(x)) dx 80. R dx 1 0 1+x 13 dx dx dx tan2 x dx 1 2 ln 3 0 0 1 1 ex +e−x dx x5 ln x dx 1 e− x x2 dx √ x dx x+1 R √ ( ln x/x) dx R 2 x 82. x e dx R 83. ln(x2 + 1) dx R x) dx 84. ln(ln x 81. 2