Integral Calculus is the part of calculus that deals with integration and its application in the solution of differential equations and in determining areas or volumes etc. It involves problems like the solution of area and volume. It would not be an exaggeration if we call Calculus to be the castle of Mathematics and its most important part is the integral calculus. The topic is quite scoring and has a good weightage in exams like IIT JEE, AIEEE, etc. but it can be mastered only through constant practice. Definite integrals and Indefinite integrals are the major tools that are used for applications under the topic of Area. Calculation of area is considered a hard topic but since it fetches many questions in JEE so it must be given due importance. This includes chapters: 1. Indefinite Integration 2. Definite Integration 3. Area bounded by curves