Calculus is a fundamental topic of Mathematics and rich in applications. This book will be useful in preparing for various competitive examinations. The book uses a simple language so that the students do not have any difficulty in understanding the content. Each chapter contains the requisite theory as well as a fairly large number of solved examples, along with graphs. There are a plenty of problems given at the end of each chapter, for practice. Many of the problems have been selected from various university examination papers. To cater to the specific needs of the students, a chapter on practical lab using Mathematica software discussing plotting of various types of graphs, calculating of derivatives of functions and plotting of its derivatives etc. - has also been added in the book.