Find the period and the amplitude of the periodic function.
y = –4 cos 8x
A. period = one-fourth, amplitude = 4
B. period = one-fourthpi, amplitude = 4
C. period = one-halfpi, amplitude = –4
D. period = one-half, amplitude = –4
1 answer
B. period = one-fourthpi, amplitude = 4
1 answer