Starting with x0=0x_0 = 0x0=0, use the iteration formula xn+1=3xn2+4\displaystyle x_{n+1} = \frac{3}{x_n^2 + 4}xn+1=xn2+43 three times to find an estimate for the solution to x3+4x=3x^3 + 4x = 3x3+4x=3
124 exam-style questions on Eduqas GCSE Maths Iteration. Each one has a worked solution and a mark scheme showing where the marks go.