Exercises 10.1, page 302

1. $y = 3 \cos x$ $y = 3 \cos x$
3. 0, $- 0.7, - 1, - 0.7,$ $- 0.7, - 1, - 0.7,$ 0, 0.7, 1, 0.7, 0, $- 0.7, - 1, - 0.7,$ $- 0.7, - 1, - 0.7,$ 0, 0.7, 1, 0.7, 0
5. 3, 2.1, 0, $- 2.1, - 3, - 2.1,$ $- 2.1, - 3, - 2.1,$ 0, 2.1, 3, 2.1, 0, $- 2.1, - 3, - 2.1,$ $- 2.1, - 3, - 2.1,$ 0, 2.1, 3
7. $Amplitude = 3$ $Amplitude = 3$
9. $Amplitude = \frac{5}{2}$ $Amplitude = \frac{5}{2}$
11. $Amplitude = 200$ $Amplitude = 200$
13. $Amplitude = 0.8$ $Amplitude = 0.8$
15. $Amplitude = 1$ $Amplitude = 1$
17. $Amplitude = 1500$ $Amplitude = 1500$
19. $Amplitude = 4$ $Amplitude = 4$
21. $Amplitude = 50$ $Amplitude = 50$
23. 0, 0.84, 0.91, 0.14, $- 0.76, - 0.96, - 0.28,$ $- 0.76, - 0.96, - 0.28,$ 0.66
25. $- 12, - 6.48, 4.99, 11.88, 7.84, - 3.40, - 11.52, - 9.05$ $- 12, - 6.48, 4.99, 11.88, 7.84, - 3.40, - 11.52, - 9.05$
27. $y = - 2 \sin x$ $y = - 2 \sin x$
29.
31.
33. $y = 4 \sin x$ $y = 4 \sin x$
35. $y = - 1.5 \cos x$ $y = - 1.5 \cos x$
37. $y = - 2.50 \sin x$ $y = - 2.50 \sin x$
39. $y = - 2.50 \cos x$ $y = - 2.50 \cos x$