In Exercises 19–26, describe the relationship between the graphs of f and g. Consider amplitude, period, and shifts.
19. f(x) = sin x
20. f(x) = cos x
g(x) = sin(x – 7) g(x) = cos(x + 7)
21. f(x) = cos 2x
22. f(x) = sin 3x
g(x) =
cos 2x
g(x) = sin(-3x)
23. f(x) = cos x
24. f(x) = sin x
g(x) = cos 2x
g(x) = sin 3x
25. f(x) = sin 2x
26. f(x) = cos 4x
g(x) = 3 + sin 2x
g(x) = -2 + cos 4x