Learn how to compose two linear functions. To compose two functions means to express one of the functions as a function of ...

👉 Learn how to evaluate the limit of a piecewise function. A piecewise function is a function that has different rules for a ...

Functions of two variables can be visualized in many ways: heat maps in 2D, contour curves in 2D, wireframes in 3D, surfaces in 3D. We begin by defining a function of two variables, building an array ...