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(a) The total, kinetic, and potential energies over time with Δx = L0/6; (b) The relative error of the total energy over time. The simulations are performed with p = 1, a = 1, b = 0, and Δt = 2 × 10−4T0. The reference value of the total energy E0 is chosen to be the total energy at time t = 0, which is 1.1 × 105 kg m2/S2.
