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Returning to the original (DS) enquiry, Eisberg and Lerner consume over 50are you speaking about;
pp. on RC, LC, and RLC circuitry. Numerically and analytically.
Crummer discussed recently (PHYS-L).
In a long run the current goes to 0 and half the energy is loss. That
kind of simulations do not "conserve energy”.
I compared the Crummer and JD’s over 50 cycles (harmonic oscillator) and
found little (none, IIRC). There are other AJP articles including one
that has a simple “time saver”. It finds the speed to adjust the step
size, thus improving efficacy (time and accuracy function)
**** e.g. Eric Ayers at Chico State; IIRC, is writing the text for his