How to solve this ODE in SMath?

How to solve this ODE in SMath? - Messages

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#1 Posted: 2024/4/27 14:15:52

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Lens.sm (362.46 KiB) downloaded 862 time(s).

#2 Posted: 2024/4/27 20:49:01

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Looks like the algebraic relationships need to be separated out:

Lens_stv.sm (363.89 KiB) downloaded 922 time(s).

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Valery Ochkov 2024/4/28 00:04:00

#3 Posted: 2024/4/28 03:18:10

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Thanks!
New question.
Can we use here the Mathcad-block for ODE solution?
See please the attach
Lens.sm (118 KiB) downloaded 901 time(s).

#4 Posted: 2024/5/1 14:07:58

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The solution at N>30 and with units
Lens-Euler-RungeKutta.sm (59.18 KiB) downloaded 925 time(s).