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Numerical Methods

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Question 113

f(x)=x5+2x2+x−5f(x) = x^5 + 2x^2 + x - 5f(x)=x5+2x2+x−5

a.

Find f′(x)f'(x)f′(x)

[2]
b.

The root of f(x)=0f(x) = 0f(x)=0 lies in the interval [1,1.5][1, 1.5][1,1.5]. Use the Newton-Raphson method, starting with x0=1x_0 = 1x0​=1, to find the root of f(x)=0f(x) = 0f(x)=0 to 3 decimal places.

[5]
Markscheme

Numerical Methods Questions

  1. A Level
  2. /Maths
  3. /Numerical Methods

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.

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