The book has the following structure: each section begins with a brief theoretical introduction on setting the problem, giving working formulas, computational schemes, estimates of error, and a comparison of different methods from the angle of their labo-riousness, their attainable degree of accuracy, and the convenience of solving them on a computer. There follows a detailed solution of model problems illustrating each appropriate algorithms. At the end of the section problems for independent practice are suggested with their answer.The book is intended primarily for engineering students but may also prove useful for economics students, for graduate engiAneers, and for post graduate students and scientific workers in the applied sciences. The material, we would emphasize, does not go beyond the limits of the syllabus in computational matheAmatics.