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ODE: Nonlinear Degree 4
ID:  3ed29345ac3b037eca8ee38ab1cc0aac
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xd0 = x0**2*x1**2-x0**4-x0*x1**2+x0**3-x1**4
xd1 = -1.0*x1**3+x0**2*x1
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IVP: 28
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x0 = [0.2,1.0]
x1 = [0.5,1.0]
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IVP: 29
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x0 = 1.0
x1 = 1.0