NonlinearSystem System Constructors NonlinearSystem Composition and Accessor Functions get_eqs(sys) or equations(sys): The equations that define the nonlinear system. get_unknowns(sys) or unknowns(sys): The set of unknowns in the nonlinear system. get_ps(sys) or parameters(sys): The parameters of the nonlinear system. get_u0_p(sys, u0map, parammap) Numeric arrays for the initial condition and parameters given var => value maps. Transformations structural_simplify alias_elimination tearing Analyses ModelingToolkit.isaffine ModelingToolkit.islinear Applicable Calculation and Generation Functions calculate_jacobian generate_jacobian jacobian_sparsity Problem Constructors NonlinearFunction(sys::ModelingToolkit.NonlinearSystem, args...) NonlinearProblem(sys::ModelingToolkit.NonlinearSystem, args...) Torn Problem Constructors BlockNonlinearProblem Expression Constructors NonlinearFunctionExpr NonlinearProblemExpr