Chapter 400.518.104.22.168.60.81|A(V)|0.73•VFigure 4–A: The graph of the function|A(V)|.−C3sinπ2V+C4cosπ2V=VV2−1cosπV+VV2−1=2VV2−1cos2π2V.The solution of this system isC3= 0,C4=2VV2−1cosπ2V.So,y2(t) =2VV2−1cosπ2Vsint.(b)The graph of the function|A(V)|=2VV2−1cosπ2Vis given in Figure 4-A. From this graph, we find that the most violent shaking of thevehicle (the maximum of|A(V)|) happens when the speedV≈0.73 .47.The auxiliary equation in this problem is
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