[微積] anharmonic oscillator, linear system
My problem and my concerned issue are written in the following link:
https://math.stackexchange.com/questions/2423108/anharmonic-oscillator-with-nonlinear-term-solution
Question:
How to solve d^2x/dt^2 + w_0^2*x + a*x^3=0
,with the initial conditions: x(t_n)=x_n, and p(t_n)=p_n?
The solution should be one of the Jacobi elliptic functions, or the
combination of them.
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