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A-LevelMathematicsNumerical methods9709/31 · Oct/Nov 2024 · Q57 Marks

Show by calculation that this root lies between 7 and 9.

  1. (b)Show by calculation that this root lies between 7 and 9.[2]

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2024). The mark or mark type is shown in brackets.

  1. [M1] Calculate the value of a relevant expression or values of a relevant pair of expressions at x=7 and x=9
  2. [A1] Complete the argument correctly with correct calculated values E.g. 2.079<2.246 and 2.302>2.165, or 0.167 > 0 and -0.137 <0.

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About this question

Topic
Numerical methods, A-Level Mathematics (syllabus 9709). Structured question, 7 marks.
Source
A-Level Mathematics, Oct/Nov 2024 Paper 3 Variant 1, question 5.

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