The text covers the standard topics on ordinary differential equations with a wealth of applications drawn from engineering and sciences.PedagogicaI Approach This bookintended as a friendly introduction to dif-ferential equations within the context of science and engineering. It dwells more on intuition rather than rigor， The emphasis is kept on the conceptual ar-guments in order to develop an intuitive understanding of the subject matter.The text strives to be simple and understandable， and enc