An arithmetic progression has first term a and common difference d. Give that the sum of the

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An arithmetic progression has first term a and common difference d. Give that the sum of the first 100 terms is 25 times the sum of the first 20 terms.

a. Find d in term of a.

b. Write down an expression, in term of a, for the 50^th term.

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Cambridge IGCSE And O Level Additional Mathematics Coursebook

ISBN: 9781108411660

2nd Edition

Authors: Sue Pemberton

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Question Posted: Aug 31, 2021 01:08 AM

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An arithmetic progression has first term a and common difference d. Give that the sum of the

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a To find d in terms of a we can use the fact that the sum of t...View the full answer

Cambridge IGCSE And O Level Additional Mathematics Coursebook

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