how to solve a second-order differential equation set with parameter using Euler's method?

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i try the following, but then i find that i didn't clearify my "dy" is the derivative of time "t"
how can i limit the dy is the derivative of "t"?
my function is the following
thanks in advance!

Answers (1)

Wan Ji
Wan Ji on 30 Aug 2021
Edited: Wan Ji on 30 Aug 2021
Actually, dy is the derivative of y with respect to t. The code you give is absolutely right.
So you see Euler's Method
If you denote dy as dydt (), then it will be more obvious.

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