Which form of a periodic solution is sought for the natural vibration – McqOptions

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1.	Which form of a periodic solution is sought for the natural vibration study of plane elastic bodies?
A.	{Δ}={Δ0}eiωt
B.	{Δ}={Δ0}e-iω
C.	{Δ}={Δ0}e-iωt
D.	{Δ}={Δ0}e-iω/t
Answer» D. {Δ}={Δ0}e-iω/t

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