Mathematics (AS & A Level) · Oct / Nov 2021 · Paper 11 · Question 4
9709
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The first term of an arithmetic progression is a and the common difference is −4. The first term of a geometric progression is 5a and the common ratio is −1 4. The sum to infinity of the geometric progression is equal to the sum of the first eight terms of the arithmetic progression.
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4(a)[4]
4(b)[2]
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