●Mathematical models as differential Equations – qualitative and quantative analysis. ●First order differential equations. ●Second order linear differential equations. ●Higher order linear differential equations. ●Second order nonlinear differential equations – pendulum motion.
2.6 存在與唯一性(for 1st order system) 2.7 (假的) 3D-system (流行病傳染問題) 2.8 (真的) 3D-system (氣象預報簡化系統: Lorenz equation)
3.7 Part II: T-D plane 3.8 3D linear system
Non-linear 2nd order ode: --Pendulum motion --Pendulum motion and spring motion --Differences of phase portraits between linear and
3.2 Straight-Line Solutions 3.3 Phase Portraits for Linear Systems with Real Eigenvalues 3.4 complex valued eigenvalues
--Predator-Prey problem --Deposit and Withdraw problem