Inverse functions GCSE questions1. (a) If f(x)=6x−5,f(x)=6x−5,f(x)=6x−5, find f−1(x).f−1(x).f−1(x). (b) If g(x)=3+√x,g(x)=3+x,g(x)=3+x, find g−1(x).g−1(x).g−1(x). (4 marks) Show answer ...
expanding, factorising and the law of indices. These ‘tools’ or skills allow students to solve inequalities and linear equations – two predominant questions on the Maths GCSE exam.
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Henceforth we refer to this as the “GCSE z-score”. To account for each student’s predetermined academic outcomes, we also control for the total point score in low-stakes ‘National Tests’ in English, Maths and Science at age 11 and age 14. 3. Data and descriptive statistics We use ...