This is the fourth book in the Complete Advanced Level Mathematics series, which has been developed in consultation with practising teachers for the new AS and A2 specifications. It covers D1, D2 and DC modules for all specifications. The chapters are supported by a 'What You Need to Know' section featuring prerequisite information and concluding summaries of key points for complete understanding. Hints and tips are provided in the margin to aid understanding and provide extra support.Numerous staged and graded examples are given with worked solutions, technique and contextual exercises from actual exam papers. .Applications and Extensions feature at the end of each chapter for coursework and the DC module.