Question: A Critically Damped Spring The solution of the differential equation for a critically damped vibration has the from x(t) = (c1 + qt)ert with both

A Critically Damped Spring The solution of the differential equation for a critically damped vibration has the from x(t) = (c1 + qt)ert with both c1 and c2 nonzero?
(a) Show that x(t) is zero at most once.
(b) Show that (t) is zero at most once.

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