Calculus, originally called infinitesimal calculus or “the calculus of infinitesimals”, is the mathematical study of continuous change, in the same way that geometry is the study of shape and algebra is the study of generalizations of arithmetic operations.
Differentiation is a process of finding a function that outputs the rate of change of one variable with respect to another variable.
Mathematics is the TOOL of Physics. A good knowledge and applications of fundamentals of mathematics (which are used in physics) helps in understanding the physical phenomena and their applications. The topics introduced in this chapter enable us to understand topics of first year physics.
Mathematical physics part-1