Calculus

Calculus is a mathematical tool which helps the study of how things change. It provides a framework for modeling systems in which there is change, and a way to deduce the predictions of such models.

Differential calculus

At the core of calculus lie derivatives, where the derivative is defined as the instantaneous rate of change of a given function with respect to one of its variables. The study of finding a derivative is known as differentiation. Geometrically, the derivative at a known point is given by the slope of a tangent line to the graph of the function, provided that the derivative exists, and is defined at that point.

Differentiation is the reverse of Integration. Differentiation has several applications; like in physics, the derivative of displacement...