Differential and difference equations are applicable in a wide variety of fields. From mechanics in physics to predator-prey equations in biology, equations are one of the most effective methods of measuring rates of change. This book discusses various concepts like stochastic differential equations, delayed differential equations, differential algebraic equations, etc. This book is a valuable compilation of topics, ranging from the basic to the most complex advancements of differential and difference equations. It will prove beneficial for students of mathematics, physics and associated branches of science and engineering.