SalasSV_09_03_ex_ans

4 37 r cos 2 39 r 2 sin 2 1 41 r 4 sin 45 r

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Unformatted text preview: ] 3 (c) [2, 31. symmetry about the x-axis 33. no symmetry about the coordinate axes; no symmetry about the origin 35. symmetry about the origin 43. θ = π/4 37. r cos θ = 2 39. r 2 sin 2θ = 1 41. r = 4 sin θ 45. r = 1 − cos θ 47. r 2 = sin 2θ √ 53. the parabola y2 = 4(x + 1) 51. the line y = 3x 57. the line y = 2x 63. (x − 59. 3x2 + 4y2 − 8x = 16, ellipse 49. the horizontal line y = 4 55. the circle x2 + y2 = 3x b2 a a2 + b2 ) + ( y − )2 = ; center: 2 2 4 61. y2 = 8x + 16, parabola √ ba d a2 + b 2 , 65. r = , radius: 22 2 2 − cos θ SECTION 9.4 1. 3. 4 5. 7. 3 –π 1 4...
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