University:
East Georgia State College
Course:
MATH 1540 | Calculus I
Academic year:

2020
Views:

419

Pages:

7
Author:

Clint W.

Chapter 8 Review Answers Pre-Calculus #1-6: see online key 7. (3 19. z1 z2 = -25 - 25iv3; zi Z2 I llrr . 7rr 4 ) (-3 4 ) I I 8. (2, lOrr); (-2, llrr) = �(cos(-40°) + isin(-40°) 22-26. see online key 27. (8, 6) 28. (-5, -4) 32. (12, -12), (-8, 5), (2, -8), 6../2,-./5, ../65 50. Orthogonal 57. 50 ft-lb 44. -4 29. (4, -10), (0, -3), (6, -21), ../29, 2fil, ✓185 33. (-20, 20v3), -20i + 2Ov3j 36. (0, 2), 2j 43. -4 21. -1 31. 41 - 6j, -I+ j, 41 - 7j, ..Ju, -./5, ../34 30. -21 - 2j, 21, I - 3j, ../2, ../2, 2 42. -41 20. -3888 + 3888iv3 2 10. (0, -2) 9. (-2, 2v3) 45. 90° 51. -26 58. 3000../2 ft-lb 52. -26 46. 180° ;1. p.. -4 37. l, s; 47. 27° 54. 168 38. v'2,� 48. 71 ° 4 39. 2, ; 40. 8, Srr 6 49. Not orthogonal 55. 80,400 ft-lb 56. 280 ft-lb 41. 28