*** Purpose of this Book *** The purpose of this book is to supply lots of examples with details solution that helps the students to understand each example step wise easily and get rid of the college assignments phobia. It is sincerely hoped that this book will help and better equipped the higher secondary students to prepare and face the examinations with better confidence. I have endeavored to present the book in a lucid manner which will be easier to understand by all the learners. PREFACE It gives me great pleasure to present to you this book on "Applied Mathematics" written specially for you. A sincere attempt has been made to present as many as details as possible on every step. The methods used is simple, self-explanatory steps and fully illustrative. I have also kept in mind the examination requirement of the students. All the latest solved problems have been included in each and every chapter. This book should satisfy both average and brilliant students, it would help the students to get through their examination and at the same time would arouse greater intellectual curiosity in them. Every case has been taken to make the book free from errors. However if you find any mistake please do let me know, because that will help me for further improvement of the book.