- Definition of a function of several variables ⇐ 1 Multivariable Functions
- Domain, maximal domain, range ⇐ 1 Multivariable Functions
- Graph of a function of two variables ⇐ 2 Graphs of Multivariable Functions
- Level curves ⇐ 3 Contour Plots
- Contour plots ⇐ 3 Contour Plots