The developments of this book reflect a special concern to present mathematical concepts in terms that the reader can understand and practice with a variety of illustrations and examples. Thus the approach is to communicate the practical aspects of mathematics in a way that negates the fear of learning any subject with mathematical applications. Each chapter is structured in such a way that it allows the reader to check his understanding and consolidate the learning process. Some of the salient features are : * Illustrations and solved examples * Self practice problems with hints and answers * Trend questions appearing in university and professional examinations.