f(x)=x3+3x2+2x+2f(x) = x^3 + 3x^2 + 2x + 2f(x)=x3+3x2+2x+2, where α \alpha\,α denotes the root of f(x)=0f(x)=0f(x)=0 near -2.5
By choosing a suitable interval, prove that α=−2.521\alpha = -2.521α=−2.521 to 3 decimal places
329 exam-style questions on Edexcel A Level Maths Numerical Methods, covering 10.1 Locating Roots, 10.2 Iteration, 10.3 The Newton-Raphson Method, and 10.4 Applications to Modelling. Each one has a worked solution and a mark scheme showing where the marks go.