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1.12 I: Numerical methods (A-level only)

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Question 12

It is given that f(x)=x3−4x+1f(x) = x^3 - 4x + 1f(x)=x3−4x+1.

One of the intervals below contains a root of the equation f(x)=0f(x) = 0f(x)=0.

Identify this interval.

Tick one box.

A

[−1,0][-1, 0][−1,0]

B

[0,1][0, 1][0,1]

C

[2,3][2, 3][2,3]

D

[3,4][3, 4][3,4]

Markscheme

1.12 I: Numerical methods (A-level only) Questions

  1. A Level
  2. /Maths
  3. /1.12 I: Numerical methods (A-level only)

125 exam-style questions on AQA A Level Maths 1.12 I: Numerical methods (A-level only), covering 1.12.1 Locating roots by change of sign (A-level only), 1.12.2 Iterative methods and Newton-Raphson (A-level only), 1.12.3 Numerical integration (A-level only), and 1.12.4 Numerical methods in context (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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