We are glad to present our book “Engineering Mathematics-I”. The book is based on the latest syllabus of Dr. A.P.J Abdul Kalam Technical University (A.K.T.U) Lucknow, Uttar Pradesh, India for first semester of the first year B.Tech. course. We wish to express our deep sense of gratitude towards our colleagues for inspiring, guiding and supporting us to enhance our knowledge by pursuing the innovative and challenging area of our book. Now, we wish to pay our utmost gratitude to our parents for their invaluable blessings and delightful love.