Save my exams functions questions. Find f -1(x). y x (b) Write down the range of g. ...

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Sketch the graph of f x−1( ), marking clearly the end points of the graph and any points where it crosses the coordinate axes. 8 x Figure 2 The function g has domain –1 - - 8, and is linear from (–1, –9) to (2, 0) and from (2, 0) x to (8, 4). Learn about mappings of functions for your IB Maths AI course. Find the value of fh(3). The Revision notes on Introduction to Functions for the Edexcel IGCSE Maths A syllabus, written by the Maths experts at Save My Exams. Find information on key ideas, worked examples and common mistakes. A comprehensive collection of questions on functions with clear, step-by-step solutions. Medium Questions f and g are functions such that x2 = ) x ( f 2 and g(x ) = 4x3 Find f (−5) To work out hf(2) we initially calculate f(2) and then we use this value as x for h(x). Topics include domain, range, evaluation, composition, transformations, and graphs. Solve the equation f(x) = g(1). 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At 1 week old An inverse function does the exact opposite of the function it came from For example, if the function “doubles the number and adds 1” then its inverse is “subtract 1 and halve the result” It is the inverse Show all your working and give your answer correct to 2 decimal places. uk/ (1 mark) The functions f and g are defined for x ∈R by f ( x ) =3x2 + 10x +7 and g ( x ) =x +d , where d ∈R. Save My Exams! – The Home of Revision For more awesome GCSE and A level resources, visit us at www. The function g is defined by g : x → 2x2 − 6x + 5 for 0 ≤ x ≤ 4. 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