what is integration

Integration is a fundamental operation of calculus, and serves as a tool to solve problems in mathematics and physics. It is the process of calculating the integral of a function, which is the continuous analog of a sum and is used to calculate areas, volumes, and their generalizations. Integration is the reverse method of differentiation, where we reduce the functions into parts and find the summation under a vast scale. The symbol for "Integral" is a stylish "S" and the process of computing an integral is one of the two fundamental operations of calculus, the other being differentiation. The integral is called an indefinite integral, which represents a class of functions (the antiderivative) whose derivative is the integrand. The fundamental theorem of calculus relates the evaluation of definite integrals to indefinite integrals. Integration can be used to find areas, volumes, central points, and many useful things.