Using xn+1=5+4xn2\displaystyle x_{n+1} = 5 + \frac{4}{x_n^2}xn+1=5+xn24 with x0=2x_0 = 2x0=2
Find the values of x1x_1x1, x2 x_2\,x2 and x3x_3x3.
40 exam-style questions on Edexcel GCSE Maths Iteration. Each one has a worked solution and a mark scheme showing where the marks go.