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Save My Exams! – The Home of Revision For more awesome GCSE and A level resources, visit us at Functions Question Paper 4 Level IGCSE Subject Maths (0580) Exam Board Cambridge International Examinations (CIE) Paper Type Extended Topic Algebra and Graphs Sub-Topic Functions Booklet Question Paper 4 Time Allowed: 66 minutes Score: /55 Percentage: /100 Grade Boundaries: A* A B C D E U >85% 75% 60% 45% 35% 25% <25%
1 g( x ) = 3 x f( x ) = 4 – 3 x (a) Find f(2 x ) in terms of x . (b) Find ff( x ) in its simplest form. (c) Work out gg(–1). Give your answer as a fraction. (d) Find f –1 ( x ), the inverse of f( x ). (e) Solve the equation gf( x ) = 1. Answer(e) x = ................................................ [3] Save My Exams! – The Home of Revision For more awesome GCSE and A level resources, visit us at
2 f( x ) = 2 x + 3 + 3 x ) = (a) Find fg(6). x 2

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