Click to explore updated revision resources for GCSE Maths: Function notation, with step-by-step slideshows, quizzes, practice exam questions, and more! Composite functions are made when the output ...

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To find the equation of a circle when you know the radius and centre, use the formula \({(x - a)^2} + {(y - b)^2} = {r^2}\), where \((a,b)\) represents the centre of the circle, and \(r\) is the ...