Classify exercises on multi-variable function analysis
Chapter 1: Types of exercises on limits and continuity of functions of two variables.
Chapter 2: Types of exercises on partial derivatives, partial differentials, first-order and high-level complete differentials of multivariable functions.
Chapter 3: Types of exercises on extrema and GTLN-GTNN of multivariable functions.
Chapter 4: Integral Dependent Parametric.
Chapter 5: Types of exercises on double integrals.
Chapter 6: Types of exercises on triple integrals.
Chapter 7: Types of exercises on line and surface integrals.