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ODE: Oil reservoir problem
ID:  2e4b81c41405991e0a7df835bb99f245
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xd0 = x1
xd1 = x1**2-(3.0/(par0+x0**2))
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IVP: 73
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x0 = 10.0
x1 = 0.0
par0 = 0.001
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IVP: 104
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x0 = 10.0
x1 = 0.0
par0 = 0.01
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IVP: 105
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x0 = 10.0
x1 = 0.0
par0 = 0.1