Problem 1
It requires a substantive ODE/system, has obtainable evidence, permits validation, and is narrow enough for rigorous completion.
Faculty use
Reward correct mathematics, explicit units, conditions, and hypotheses, interpretation, and verification. Equivalent valid reasoning should receive credit.
It requires a substantive ODE/system, has obtainable evidence, permits validation, and is narrow enough for rigorous completion.
Stocks/states, flows/interactions, inputs, outputs, parameters, units, boundaries, and feedback links.
Definitions should identify the equation type, dependent and independent variables, parameters, conditions, units or domain, and the hypotheses behind framing a narrow, ethical and testable dynamic-system investigation. Use the formulas question → state variables → rate laws → data → solution method → validation; declare assumptions and decision context.
A strong error analysis identifies the first step that violates classification, algebra, theorem hypotheses, units, initial/boundary data, or numerical assumptions; then repairs that step and re-verifies the final result.
Application responses vary. Require defined variables, a compatible differential-equation model connected to experimental data, engineering design, control, reliability, environmental systems, biomedical modelling, and research communication, a complete computation, interpretation, and limitations.
Accept two independent checks appropriate to the task: differentiation/substitution, initial or boundary conditions, dimensional analysis, phase-line or stability evidence, residuals, step refinement, conservation/energy checks, data comparison, or a second method.
Six problems × 10 points: 5 mathematical accuracy, 2 structure/justification, 2 verification/interpretation, 1 notation and communication.