pegah

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9 years, 173 days

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These are questions asked by pegah

how can I plot the phase portrait of this system?

 

Sys := {diff(x(t),t) = y(t)-2*(x(t))^2, diff(y(t),t) = -8*(x(t))^3+4*x(t)*y(t)-5*(x(t))^4-(x(t))^5};

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