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This is the O-Level Mathematics textbook from 1993. It is a free textbook for revision.
New General Mathematics 3
An 'O' Level Course
JB Channon A McLeish Smith HC Head MF Macrae AA Chasakara
Longman Group UK Limited, Longman House,
Burnt Mill, Harlow, Essex CM 20 2JE, UK.
Associated companies, branches and representatives throughout the world
${ }^{\text {© }}$ Longman Group UK Limited 1985, 1993, 1996
All rights reserved; no part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the Publishers.
First published 1985
Second edition 1993
Nineteenth Impression 2011
ISBN 0582089638 (without answers)
ISBN 0582089646
Set in 11/12 Baskerville
Reprinted under licence from Longman Group Ltd, UK.
Not for sale outside Zimbabwe
Printed by CTP Printers, Cape Town R9079
The publisher's policy is to use paper manufactured from sustainable forests.
Acknowledgements
We are indebted to the University of Cambridge Local Examinations Syndicate for permission to reproduce questions from past examination papers.
The Publishers are grateful to Sharp Electronics (UK) Ltd for their permission to reproduce the photograph on page 24.
Preface to 1993 edition
The New General Mathematics series has been revised to reflect the content and philosophy of mathematical education in Zimbabwe's secondary schools. Books 1 and 2 provide a full course at Junior Certificate Level. Books 3 and 4 contain a substantial course leading to the General Certificate in 'O' Level Mathematics.
In Books 3 and 4, special emphasis is given to the development of mathematical skills which school leavers need to acquire for their everyday lives, and for further study and training. To achieve this there are extensive new sections on consumer arithmetic and on the use of calculators.
In order to develop problem solving skills and provide opportunities for independent thought, users of Books 3 and 4 will find sections which include 'non-routine problems'. Students and their teachers are urged to approach these with an open mind, and with the aim of finding unexpected joy and self-fulfilment in mathematics.
The need to consolidate and practice problem solving skills is maintained through periodic revision tests. These can be used to diagnose performance in mathematics and provide a basis for further improvement.
Whilst revising Books 3 and 4, opportunities were used to make corrections and to update statistical information. The …