jenngil090 jenngil090

15-05-2018
Mathematics

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Find the first three terms of the geometric sequence defined by: a1 = −2; an = 3an − 1

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sqdancefan sqdancefan

15-05-2018

The first three terms are ...
-2
3(-2) -1 = -7
3(-7) -1 = -22

_____
The "-1" in the recursion formula tells you this is NOT a "geometric" sequence. In a geometric sequence, the ratio of terms is a constant. Here, it is not.

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