This is the third students' title in the KLB Secondary Mathematics series. It has been extensively updated so as to cater adquately for the new Form Three Secondary Mathematics syllabus. In this edition, Mathematics is presented in a student-friendly manner, with elaborate examples preceding wide-ranging exercises. Mixed exercises are also given to further assist the student in self-assessment on the topics so far met. Each title of the series is accompanied by a teachers' guide which equips the teacher with vital tips on methodology and provides answers to the revision exercises.