The first term of an arithmetic series is 4. The sum to 20 terms is 15. Find,
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The first term of an arithmetic series is 4. The sum to 20 terms is −15. Find, in any order, the common difference and the 20th term.
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Lets denote the first term of the arithmetic series as a the common difference as d a...View the full answer
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Related Book For
Pearson Edexcel A Level Mathematics Pure Mathematics Year 2
ISBN: 9781292183404
1st Edition
Authors: Greg Attwood, Jack Barraclough, Ian Bettison, David Goldberg, Alistair Macpherson, Joe Petran
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