Find Amplitude, Period, and Phase Shift y=-2cos(4/3x)
y=−2cos(43x)y=-2cos(43x)
Use the form acos(bx−c)+dacos(bx-c)+d to find the variables used to find the amplitude, period, phase shift, and vertical shift.
a=−2a=-2
b=43b=43
c=0c=0
d=0d=0
Find the amplitude |a||a|.
Amplitude: 22
Find the period of −2cos(4×3)-2cos(4×3).
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3π23π2
Find the phase shift using the formula cbcb.
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Phase Shift: 00
List the properties of the trigonometric function.
Amplitude: 22
Period: 3π23π2
Phase Shift: None
Vertical Shift: None
