Week 7-8: Partial/ total derivatives and their applications in business and economics

Higher-Order Differential Equations: Second order Linear Differential Equations with Constant Coefficient and Constant term. Distinct and Repeated Real Roots.  Dynamic Stability of Equilibrium. Complex Number and Circular Functions Imaginary and Complex Numbers.  Complex Roots.  Circular Functions. Properties of Sine & cosine functions. Eular relations. Complex root case of the second-order differential equation. An alternative representation of complex numbers. The solution of higher-order differential equations with constant coefficient and constant Term.