College Algebra & Trigonometry, 2018a

9.2. GRAPHING TRIGONOMETRIC FUNCTIONS 409
Exercises 9.2
Determine the amplitude and the period for each problem and graph one period
of the function. Identify important points on the x and y axes.
1. y =cos4x 2. y = − sin 2x
3. y =3sin3x 4. y = −2cos5x
5. y =4cos 1 2 x 6. y =2sin1 3 x
7. y = − 1 2 sin 2 3 x 8. y = −3cos 3 5 x
9. y = −4sin6x 10. y =3sin4x
11. y =2cos 3 2 x 12. y =3cos5 3 x
Determine an equation that satifies the given graph.
1
2
−1
0
π
6
π
3
π
2
2π
3
0
π
8
π
4
3π
8
π
2
13.
14.
−2