The book 'A Textbook of Engineering Mathematics' (Semester-I) is written keeping in mind the interest of all types of engineering students (meritorious, average and below average). As engineering students have to do maximum work in minimum time. So in this book emphasis is given on the presentation of the fundamental and theoretical concepts in an intelligible and easy to understand manner. Simple as well as typical examples are used to explain each theoretical concept. All questions from last ten year papers of various universities have been included in the book at proper places.