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Examen
A-Level Ocr 2024 Mathematics A Paper 1 Mark Scheme
Course Mathematics
Course Mathematics
A-LEVEL OCR 2024 MATHEMATICS A PAPER 1 MARK SCHEME - Sn = n/2 (2a + (n-1)d) - Sn = n/2 (a + l) where a is the first term and l is the last term - Correct Answer--formula of an arithmetic series the sum of the terms of an arithmetic sequence - Correct Answer--what is an arithmetic series - Un = a + (n-1)d - a = the first term - d = the common difference - Correct Answer--nth term of an arithmetic sequence - Un = ar^(n-1) - a = first term - r = common ratio - Correct Answer--nth ter...
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