Learn all about calculus in this chapter: from learning about average gradient, to limits, to gradient at a point; before learning how to use first principals to differentiate and then learn the short rules of differentiation. Move on to learning how to draw a cubic graph and solving cubic graph equations for the minimum and maximum as well as the point of inference. Then learn how to maximize or minimize using calculus and practice all of these things using the questions provided after each section. Fully worked out solutions are available at the end of the chapter