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O-LevelMathematicsAlgebra and graphs4024/11 · May/June 2014 · Q201 Mark

u_n is the nth term of another sequence. Here is the formula connecting the nth and (n + 1)th terms of this sequence: 3u_n - 4 = u_{n+1}. The value of u3 is 11. Find u₂ and u4.

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Marking points from the official mark scheme (May/June 2014). The mark or mark type is shown in brackets.

[1] u₂ = 5, u4 = 29

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About this question

Topic: Algebra and graphs, O-Level Mathematics (syllabus 4024). Structured question, 1 mark.
Source: O-Level Mathematics, May/June 2014 Paper 1 Variant 1, question 20.

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