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

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14-07-2017
Mathematics

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

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irspow irspow · Answer 1 · 2017-07-14T23:09:43+02:00

irspow irspow

14-07-2017

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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