sketching phase portraits

26:01
Drawing Phase Portraits for Nonlinear Systems

14:52
Graphing phase portraits from eigen values

24:38
Linear Systems of DE with Complex Eigenvalues

18:01
Fixed points and stability of a nonlinear system

41:29
Curve Sketching - First & Second Derivatives - Graphing Rational Functions & Asymptotes - Calculus

10:20
Autonomous Equations, Equilibrium Solutions, and Stability

18:08
a super nice functional equation

10:27