mahasafy

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Answered: mahasafy 10

October 25 2021

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@acer
Thank you for cooperation and helping

(1)

gem_decl_eqs([diff(u(t, x), t, t)+a*(diff(u(t, x), x, x))+b*u(t, x)+c*u(t, x)^3 = 0], solve_for = [diff(u(t, x), t, t)])

(2)

(3)

(4)

simplified_eqs := DEtools[rifsimp](det_eqs, CL_multipliers, mindim = 1)

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