The fifth term of an arithmetic series is 14 and the sum of the first three terms

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The fifth term of an arithmetic series is 14 and the sum of the first three terms of the series is –3.

a. Use algebra to show that the first term of the series is –6 and calculate the common difference of the series.

b. Given that the nth term of the series is greater than 282, find the least possible value of n.

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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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Question Posted: Aug 08, 2023 07:58 AM

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The fifth term of an arithmetic series is 14 and the sum of the first three terms

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a Lets denote the first term of the arithmetic series as a and the common difference between terms a...View the full answer

Pearson Edexcel A Level Mathematics Pure Mathematics Year 2

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