Differential Algebraic Equations
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 -- DAE: (void)
 -- DAE: (int N)
 -- DAE: (const ColumnVector &X, double TIME, DAEFunc &F)
 -- DAE: (const ColumnVector &X, ColumnVector &XDOT, double TIME, DAEFunc &F)

 -- ColumnVector: deriv (void)

 -- virtual void: initialize (const ColumnVector &X, double T)
 -- virtual void: initialize (const ColumnVector &X, ColumnVector &XDOT, double T)

 -- ColumnVector: integrate (double T)

 -- Matrix: integrate (const ColumnVector &TOUT, Matrix &XDOT_OUT)
 -- Matrix: integrate (const ColumnVector &TOUT, Matrix &XDOT_OUT, const ColumnVector &TCRIT)