Starting with x0=0x_0 = 0x0=0, use the iteration formula xn+1=1xn2+1\displaystyle x_{n+1} = \frac{1}{x_n^2 + 1}xn+1=xn2+11 three times to find an estimate for the solution to x3+x=1x^3 + x = 1x3+x=1
124 exam-style questions on OCR GCSE Maths Iteration. Each one has a worked solution and a mark scheme showing where the marks go.