var('t') omegaf = 3 limit=130 A(t) = 1-(1/(4-omegaf^2))*cos((omegaf-2)*t) h(t) = cos(2*t) AmpPlot = plot(A(t), (t,0,limit),linestyle='dashed', color='red',thickness=2) hPlot = plot(h(t)*A(t), (t,0,limit)) mainPlot = AmpPlot+ hPlot mainPlot.show(ymin = -5,ymax = 5, axes_labels=['$t$',' '],ticks = [[],[]])<span id="mce_SELREST_start" style="overflow:hidden;line-height:0;"></span>

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