7. The Lagrangian of a particle of mass m moving in one dimension is given by: L= m -bx Where b is a positive constant. The coordinate of the particle x (t) at a time t is given by: A. - t? + C, t+ C2 B. C, t + C2 c. C, Cos () + C, Sin () D. C, Cosh () + Sinh ()
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