Starting with x0=1x_0 = 1x0=1, use the iteration formula xn+1=4xn2+5\displaystyle x_{n+1} = \frac{4}{x_n^2 + 5}xn+1=xn2+54 three times to find an estimate for the solution to x3+5x=4x^3 + 5x = 4x3+5x=4.
Practise AQA GCSE Maths Iteration with exam-style questions for Foundation and Higher tier. 40 questions, matched to the AQA GCSE Maths (8300) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.