Exam (elaborations)
OCR a-level maths Complete Assignment With 100% Correct $ Verified Answers.
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- 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 arit...
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