How do you graph #y=cos(4x)#?

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Answer 1 · 2018-06-07T07:09:17

As below.

#y = cos (4x)#

Standard form is #y = A cos (Bx - C) + D#

#A = 1, B = 4, C = D = 0#

#Amplitude = |A| = 1#

#"Period " = (2pi) / |B| = (2pi) / 4 = pi/2#

#"phase Shift " = -C / B = 0#

#"Vertical Shift " = D = 0#

graph{cos (4x) [-10, 10, -5, 5]}