The definition and solution of engineering problems relies on the ability to represent systems and their behaviour in mathematical terms. Technican Mathematics 4/5 provides a simple and practical guide to the fundamental mathematical skills essential to technicians and engineers. This second edition has been revised and expanded to cover the BTEC Mathematics for Engineers - Higher National module for Electrical and Electronic Engineering - Higher National Certificates and Diploma. It is also suitable for first and second year undergraduates studying electrical engineering.