This book has brought together important issues in current macroeconomics, such as stabilisation policies, money supply and demand, unemployment and inflation, the rational expectations hypothesis, exchange rate determination, etc. Mathematical exposition Is adequately supplemented by descriptive theoretical explanation. It offers a thorough mathematical treatment of all classes of macroeconomic models - classical, Keynesian, monetarist, new classical and new Keynesian. The difference between schools of thought regarding stabilisation policies has been highlighted. The tools of mathematics have been thoroughly explained before their application. The book will be essential reading for undergraduate and graduate students of macroeconomic theory and mathematical economics.