Differential and integral equations are studied in calculus. They are at the core of complex mathematical calculations and are applied in physics, computational mathematics, economics, etc. Differential and integral equations are closely related to each other and each can be formulated in terms of the other. The techniques used in differential and integral equations are frequently used in advanced classical mathematics, electromagnetism, general relativity and other branches of physics. The topics included in this book on differential and integral equations are of the utmost significance and bound to provide incredible insights to readers. This book further elucidates the advanced techniques and their applications in a multidisciplinary manner. The extensive content of this book will provide mathematicians, physicists and other experts with a thorough understanding of the subject.