Citation:
The domain of a function is the complete set of possible values that the independent variable can take without causing any inconsistencies, such as division by zero or taking the square root of a negative number. Understanding the domain is essential when working with multivariable functions, as it helps to define the valid inputs for the function and ensures that calculations are meaningful and accurate. The concept of the domain extends beyond simple functions, applying to functions with multiple variables where the interplay of these variables can restrict valid input combinations.