- Functions of Several Variables
- Limit and Continuity of Several Variable Functions
- Partial Derivatives
- Higher Partial Derivatives
- Proof of Clairaut’s Theorem Equqlity of Mixed Derivative
- Differentiability and Total Differential
- Chain Rule for Multivariable Functions
- Implicit Differential for Multivariable Functions
- Directional Derivatives
- Gradient Vector
- Tangent Planes and Normal Lines
- Maximum and Minimum of Multivariable Functions
- Lagrange Multiplier
- Lagrange Multiplier with Two Constraints