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A-LevelFurther MathematicsMathematical InductionOct/Nov 2014Paper 1 Q37 Marks

It is given that u_r = r × r! for r = 1, 2, 3, ... . Let S_n = u_1 + u_2 + u_3 + ... + u_n. Write down the values of 2! - S_1, 3! - S_2, 4! – S_3, 5! – S_4. Conjecture a formula for S_n. Prove, by mathematical induction, a formula for S_n, for all positive integers n.

📋 Examiner Report & Trap Analysis

Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This A-Level Further Mathematics Question

Topic

This structured question tests Mathematical Induction in A-Level Further Mathematics (syllabus code 9231). It is worth 7 marks.

Source

This question appeared in the Cambridge A-Level Further Mathematics Oct/Nov 2014 examination, Paper 1 Variant 2.

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