The first term of a geometric series is 130. The sum to infinity of the series is

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The first term of a geometric series is 130. The sum to infinity of the series is 650.

a. Show that the common ratio, r, is 4/5.

b. Find, to 2 decimal places, the difference between the 7th and 8th terms.

c. Calculate the sum of the first 7 terms. The sum of the first n terms of the series is greater than 600.

d. Show that

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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 first term of a geometric series is 130. The sum to infinity of the series is

Question:

n n> -log 13 log 0.8

Step by Step Answer:

a To find the common ratio we can use the formula for the sum of an infinite geometric series S a 1 ...View the full answer

Pearson Edexcel A Level Mathematics Pure Mathematics Year 2

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