The students of B.A. (Mathematics), B.Sc. (Mathematics & Physics), M.A. (Mathematics), M.Sc. (Mathematics & Physics), and B.E./B.Tech. are the target audience for this book. Additionally, it will be extremely helpful for candidates for the CSIR-UGC (NET), AMIE, GATE, and other competitive exams. At the conclusion of each chapter, there is a series of objective problems (such as those from GATE, NET, and other university examinations). Additionally, a number of fresh cases with solutions have been introduced to help the reader develop confidence in the problem-solving methods.