Import NumPy and Matplotlib for basic linear and polynomial plots ... axis on a 2D plane. We'll set up our x-axis with the np.linspace command, which will set up an evenly spaced array of values.

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 ...