How do you graph and list the amplitude, period, phase shift for #y=2cos4x#?

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Answer 1 · 2018-07-31T05:46:21

Please see the explanation below

The general function is

#y=asin(omegat+phi)#

Here,

The function is

#y=2cos4x#

The amplitude is

#a=2#

The phase shift is

#phi =0#

The period is

#T=2pi/omega=(2pi)/4=pi/2#

graph{2cos(4x) [-5.096, 7.39, -2.845, 3.395]}