Which of the following is the general term for the sequence a, -a, a, -a, . . . ?

asked Jan 19, 2020 90.0k views

2 votes

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4 votes

Answer:

a(-1)^(n-1).

Explanation:

This is a Geometric Sequence with common ratio r = -1.

The general term is a(-1)^(n-1).

Shahram answered Jan 24, 2020

5.2k points

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