Cambridge IGCSE™ and O Level Additional Mathematics COURSEBOOK Sue Pemberton Third edition Digital Access Contents Contents Introduction00 How to use this book 00 1 Functions00 1.1 Mappings00 1.2 Definition of a function 00 Composite functions 00 1.3 Modulus functions 00 1.4 1.5 Graphs of y = |f(x)| where f(x) is linear 00 Inverse functions 00 1.6 1.7 The graph of a function and its inverse Summary00 Past-paper questions 00 2 Simultaneous equations and quadratics00 2.1 Simultaneous equations (one linear and one non-linear) 00 2.2 Maximum and minimum values of a quadratic function 00 2.3 Graphs of y = |f(x)| where f(x) is quadratic00 2.4 Quadratic inequalities 00 2.5 Roots of quadratic equations 00 2.6 Intersection of a line and a curve 00 Summary00 Past-paper questions 3 Factors and polynomials 00 00 3.1 Adding, subtracting and multiplying polynomials00 3.2 Division of polynomials 00 3.3 The factor theorem 00 3.4 Cubic expressions and equations 00 3.5 The remainder theorem 00 Summary00 Past-paper questions 4 Equations, inequalities and graphs00 4.1 Solving equations of the type |ax + b| = |cx + d| 4.2 Solving modulus inequalities 00 4.3 Sketching graphs of cubic polynomials and their moduli 00 Solving cubic inequalities graphically 4.4 4.5 Solving more complex quadratic equations00 Summary00 Past-paper questions 00 5 Logarithmic and exponential functions00 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 Logarithms to base 10 00 Logarithms to base a00 The laws of logarithms 00 Solving logarithmic equations 00 Solving exponential equations 00 Change of base of logarithms 00 Natural logarithms 00 Practical applications of exponential equations00 5.9 The graphs of simple logarithmic and exponential functions 00 nx 5.10 The graphs of y = k e + a and y = k ln (ax + b) where n, k, a and b are integers 00 5.11 The inverse of logarithmic and exponential functions 00 Summary00 Past-paper questions 00 00 i CAMBRIDGE IGCSE™ AND O LEVEL ADDITIONAL MATHEMATICS: COURSEBOOK 6 Straight-line graphs 00 6.1 Problems involving length of a line and midpoint00 Parallel and perpendicular lines 00 6.2 6.3 Equations of straight lines 00 6.4 Areas of rectilinear figures 00 Converting from a non-linear equation to 6.5 linear form 00 6.6 Converting from linear form to a nonlinear equation 00 6.7 Finding relationships from data 00 Summary00 Past-paper questions 00 7 Coordinate geometry of the circle00 7.1 7.2 The equation of a circle 00 Problems involving intersection of lines and circles 00 Summary00 Past-paper questions 00 8 Circular measure 00 8.1 Circular measure 00 8.2 Length of an arc 00 8.3 Area of a sector 00 Summary00 Past-paper questions 00 9 Trigonometry00 9.1 9.2 9.3 9.4 9.5 Angles between 0° and 90° 00 The general definition of an angle 00 Trigonometric ratios of general angles 00 Graphs of trigonometric functions 00 Graphs of y = |f(x)|, where f(x) is a trigonometric function 00 9.6 Trigonometric equations 00 9.7 Trigonometric identities 00 Further trigonometric equations 00 9.8 9.9 Further trigonometric identities 00 Summary00 Past-paper questions ii 00 10 Permutations and combinations 00 10.1 Factorial notation 00 Arrangements00 10.2 10.3 Permutations00 10.4 Combinations00 Summary00 Past-paper questions 00 11 Series00 11.1 Pascal’s triangle 00 11.2 The binomial theorem 00 11.3 Arithmetic progressions 00 Geometric progressions 00 11.4 11.5 Infinite geometric series 00 11.6 Further arithmetic and geometric series 00 Summary00 Past-paper questions 12 Calculus – Differentiation 1 00 00 12.1 12.2 12.3 12.4 12.5 12.6 12.7 12.8 12.9 12.10 The gradient function 00 The chain rule 00 The product rule 00 The quotient rule 00 Tangents and normals 00 Small increments and approximations 00 Rates of change 00 Second derivatives 00 Stationary points 00 Practical maximum and minimum problems00 Summary00 Past-paper questions 00 13 Vectors00 13.1 Further vector notation 00 13.2 Position vectors 00 13.3 Vector geometry 00 13.4 Constant velocity problems 00 Summary00 Past-paper questions 00 Contents 14 Calculus – Differentiation 2 00 14.1 Derivatives of exponential functions 00 Derivatives of logarithmic functions 00 14.2 14.3 Derivatives of trigonometric functions 00 14.4 Further applications of differentiation 00 Summary00 Past-paper questions 15 Calculus – Integration 15.1 15.2 15.3 15.4 15.5 15.6 00 00 Differentiation reversed 00 Indefinite integrals 00 Integration of functions of the form (ax + b)n00 Integration of exponential functions 00 Integration of sine and cosine functions00 1 Integration of functions of the form __ x and ______ 1 ax + b 15.7 15.8 15.9 15.10 15.11 Further indefinite integration 00 Definite integration 00 Further definite integration 00 Area under a curve 00 Area of regions bounded by a line and a curve00 Summary00 Past-paper questions 00 16 Kinematics00 16.1 Applications of differentiation in kinematics00 16.2 Applications of integration in kinematics 00 Summary00 Past-paper questions 00 Answers000 Index000 iii CAMBRIDGE IGCSE™ AND O LEVEL ADDITIONAL MATHEMATICS: COURSEBOOK Introduction This highly illustrated coursebook covers the Cambridge IGCSE TM Additional Mathematics and O Level syllabuses (0606/4037). The course is aimed at students who are currently studying or have previously studied Cambridge IGCSE TM Mathematics (0580/0980) or Cambridge O Level Mathematics (4024). Where the content in one chapter includes topics that should have already been covered in previous studies, a prerequisite knowledge section has been provided so that you can build on your prior knowledge. ‘Discussion’ sections have been included to provide you with the opportunity to discuss and learn new mathematical concepts with your classmates. ‘Challenge’ questions have been included at the end of most exercises to challenge and stretch you. Towards the end of each chapter, there is a summary of the key concepts to help you consolidate what you have just learnt. This is followed by a ‘Past paper’ questions section, which contains questions taken from past papers for this syllabus. A Practice Book is also available in the IGCSE TM Additional Mathematics series, which offers you further targeted practice. This book closely follows the chapters and topics of the coursebook, offering additional exercises to help you to consolidate concepts you have learnt and to assess your learning after each chapter. iv How to use this book How to use this book Throughout this book, you will notice lots of different features that will help your learning. These are explained below. THIS SECTION WILL SHOW YOU HOW TO: ACTIVITY These set the scene for each chapter, help with navigation through the Coursebook and indicate the important concepts in each topic. Activities give you an opportunity to apply your understanding of a concept to a practical task. When activities have answers, you can find these in the digital version of the Coursebook. PRE-REQUISITE KNOWLEDGE This feature shows how your understanding or use of a topic covered in another area of the book will help you with the concepts in this chapter. WORKED EXAMPLE These boxes show you the step-by-step process to work through an example question or problem, giving you the skills to work through questions yourself. TIP CLASS DISCUSSION The information in this feature will help you complete the exercises, and give you support in areas that you might find difficult. At certain points in the chapters you will be given opportunities to talk about your learning and understanding of the topic in a small group or with a partner. KEY WORDS REFLECTION The key vocabulary appears in a box at the start of each chapter, and is highlighted in the text when it is first introduced. You will also find definitions of these words in the Glossary at the back of this book. These activities ask you to think about the approach that you take to your work, and how you might improve this in the future. Exercises Appearing throughout the text, exercises give you a chance to check that you have understood the topic you have just read about and practice the mathematical skills you have learned. You can find the answers to these questions in the digital version of the Coursebook. CHALLENGE QUESTIONS These exercises will stretch your skills in the topic you have just learned. You can find the answers to these questions in the digital version of the Coursebook. Past paper questions Questions at the end of each chapter provide a variety of past paper questions, some of which may require use of knowledge from previous chapters. Answers to these questions can be found in the digital version of the Coursebook. SUMMARY There is a summary of key points at the end of each chapter. This icon shows you where you should complete an exercise without using your calculator. v CAMBRIDGE IGCSE™ AND O LEVEL ADDITIONAL MATHEMATICS: COURSEBOOK How to use this series This suite of resources supports learners and teachers following the Cambridge IGCSE™ and O Level Additional Mathematics syllabuses (0606/4037). Up-to-date metacognition techniques have been incorporated throughout the resources to meet the changes in the syllabus content and develop a complete understanding of mathematics for learners. All of the components in the series are designed to work together. Cambridge IGCSE™ and O Level Additional Mathematics COURSEBOOK Sue Pemberton Third edition Digital Access The coursebook contains sixteen chapters that together offer complete coverage of the syllabus. We have worked with NRICH to provide a variety of project activities, designed to engage learners and strengthen their problem-solving skills. Each chapter contains opportunities for formative assessment, differentiation and peer and self-assessment offering learners the support needed to make progress. Cambridge Online Mathematics is available through the digital/print bundle option or on its own without the print coursebook. Learners can review content digitally, explore worked examples and test their knowledge with quiz questions and answers. Teachers benefit from the ability to set tests and tasks with the added auto-marking functionality and a reporting dashboard to help track learner progress quickly and easily. The digital teacher’s resource provides extensive guidance on how to teach the course, including suggestions for differentiation, formative assessment and language support, teaching ideas and PowerPoints. The Teaching Skills Focus shows teachers how to incorporate a variety of key pedagogical techniques into teaching, including differentiation, assessment for learning, and metacognition. Answers for all components are accessible to teachers for free on the Cambridge GO platform. Cambridge IGCSE™ and O Level Additional Mathematics TEACHER’S RESOURCE COURSEBOOK Sue Pemberton Third edition vi Digital Access 1 Cambridge IGCSE™ and O Level Additional Mathematics PRACTICE BOOK Muriel James Characteristics & classification How ofto living use organisms this series A Practice Book is available for learners that wish to have extra questions to work through. This resource which can be used in class or assigned as homework, provide a wide variety of extra maths activities and questions to help learners consolidate their learning and prepare for assessment. ‘Tips’ are also regularly featured to give learners extra advice and guidance on the different areas of maths they encounter. Access to the digital versions of the practice books is included, and answers can be found either here or in the back of the books. Digital Access Cambridge IGCSE™ and O Level Additional Mathematics A Worked Solutions Manual has been introduced to the series. This offers a fully worked solution, with annotated comments, to a selection of questions for teachers or learners to use as they work through the content. WORKED SOLUTIONS MANUAL Muriel James Digital Access vii