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14 October, 16:40

Given a1=64, r=1/2 find the next three terms and the explicit formula.

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  1. 14 October, 16:54
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    Any geometric sequence can be expressed as:

    a (n) = ar^ (n-1), in this case a=64 and r=1/2 so

    a (n) = 64 (1/2) ^ (n-1)

    So the 2nd, 3rd, and 4th terms are:

    32, 16, and 8
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