This best selling textbook provides, in its Fourth Edition, full coverage of the latest syllabus developments at A/AS-level. Each topic is explained thoroughly in concise, lucid language - starting at an appropriate level (7/8) of the National Curriculum. Plenty of worked examples give practice in calculations from first principles. The format has been updated for improved presentation. New 'Consolidation' sections and questions designed to provide a link between GCSE and A-level feature in the text. At the end of each section there are many questions - ideal for consolidation and revision - mainly from past A-level examination papers. Over 15 of these past-paper questions have been added in the Fourth Edition. Answers are included.