C3 - Numerical methods 2.0 / 5 based on 1 rating ? MathematicsNumerical methodsA2/A-levelEdexcel Created by: Jess HCreated on: 23-01-13 16:11 What must you do before using the iteration formula? Rearrange for x 1 of 5 What is the iteration formula? x_(n + 1) = f(x_n) 2 of 5 Why isn't the iteration formula always reliable? (two reasons) 1. Different arrangments of equation may lead to different answers. 2. The series of x_0, x_1, x_2... may not improve an answer for the root 3 of 5 What is the basic rule for finding a root? A root lies in the interval where f(x) changes sign 4 of 5 If x_0 = 1, what is x_1 given the equation x = (7x + 5)/4x x_1 = (7 +5)/4 =3 5 of 5
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