A cosine function has a period of 3π/4, an amplitude of 4, and a vertical translation 3 units down. The function is not reflected over the x-axis. What is the equation for this cosine function?
cos x give it amplitude 4
4 cos x 3 units down makes it 4 cos x - 3
NOT reflected , so it is still 4 cos x -3
period = 3pi/4 makes it 2pi/(3pi/4) = 8/3 4 cos (8x/3) - 3
Nice, EP !!!!