a. The first term of a geometric progression in which all the terms are positive is 50.

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a. The first term of a geometric progression in which all the terms are positive is 50. The third term is 32.

Find the sum to infinity of the progression.

b. The first three terms of an arithmetic progression are 2sinx, 3cosx and (sinx + 2cosx) respectively, where x is an acute angle.

i. Show that tan x = 4/3.

ii. Find the sum of the first twenty terms of the progression.

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Cambridge International AS And A Level Mathematics Pure Mathematics 1 Coursebook

ISBN: 9781108407144

1st Edition

Authors: Sue Pemberton, Julian Gilbey

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Question Posted: Mar 10, 2023 05:52 AM

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a. The first term of a geometric progression in which all the terms are positive is 50.

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a Let the common ratio of the geometric progression be denoted by r Then the second term of the prog...View the full answer

Cambridge International AS And A Level Mathematics Pure Mathematics 1 Coursebook

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