Using xn+1=6xn2+2\displaystyle x_{n+1} = \frac{6}{x_n^2 + 2}xn+1=xn2+26 with x0=1x_0 = 1x0=1
Verify that x1=2x_1 = 2x1=2, x2=1x_2 = 1x2=1 and x3=2x_3 = 2x3=2.
124 exam-style questions on OCR GCSE Maths Iteration. Each one has a worked solution and a mark scheme showing where the marks go.