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ODE: B1 DETEST
ID:  dac0ae095d80eb999fbf63159185e84d
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xd0 = 2.0*x0-2.0*x0*x1
xd1 = -x1+x0*x1
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IVP: 12
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x0 = 1.0
x1 = 3.0
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IVP: 13
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x0 = [0.9,1.1]
x1 = 3.0