👉 Joined math, also known as multivariable calculus or higher-dimensional calculus, extends the concepts of single-variable calculus to functions of multiple variables. It deals with understanding how these functions change as their inputs vary simultaneously, often in more than one dimension. This involves derivatives and integrals that account for the interaction between variables, such as partial derivatives (measuring change with respect to one variable while others are held constant) and multiple integrals (summing values over regions in space). Joined math is crucial for analyzing complex systems in fields like physics, engineering, and economics, where phenomena often depend on multiple interacting factors.
