Starting with x0=0x_0 = 0x0=0, use the iteration formula xn+1=1xn2+2\displaystyle x_{n+1} = \frac{1}{x_n^2 + 2}xn+1=xn2+21 three times to find an estimate for the solution to x3+2x=1x^3 + 2x = 1x3+2x=1
Give your answer in exact form.
124 exam-style questions on Eduqas GCSE Maths Iteration. Each one has a worked solution and a mark scheme showing where the marks go.