Multivariable Functions

A multivariable function is a mathematical relationship that takes multiple input values and produces a single output. Unlike functions with only one input, these depend on two or more variables, such as height and weight affecting calorie needs. They help us understand how changing each input influences the output simultaneously. For example, the temperature of a room depends on both the heater setting and the outside weather. Visualizing these functions often involves 3D surface graphs, where you see how the output varies across different combinations of inputs.