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Normal
1y=(2/3)cos(t/3)amplitude: 2/3period: 6pifrequency: 1/(6pi)2.y=5cos(2pi*t)amplitude: 5period: 1frequency: 1
1
y=(2/3)cos(t/3)
amplitude: 2/3
period: 6pi
frequency: 1/(6pi)
2.
y=5cos(2pi*t)
amplitude: 5
period: 1
frequency: 1