BDH3.mws Section 3.1 -- Properties of Linear Systems and The Linearity Principle Recreation of Figures 3.1 - 3.4 (pp. 226 - 227) Figures 3.1 and 3.3 Figures 3.2 and 3.4 Section 3.2 -- Straight-Line Solutions Example with A = MATRIX([[-2, 1], [1, -2]]); Section 3.3 -- Phase Planes for Linear Systems with Real Eigenvalues Saddle Source Sink Harmonic Oscillator Example Section 3.4 -- Complex Eigenvalues Example with A = MATRIX([[-1, 2], [-1, -1]]); Section 3.5 -- Special Cases: Repeated and Zero Eigenvalues Example with A = MATRIX([[2, 1], [-1, 4]]); Example with A = MATRIX([[2, 4], [3, 6]]);