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luda_lava [24]
3 years ago
8

What are the explicit equation and domain for an arithmetic sequence with a first term of 6 and a second term of 2?

History
1 answer:
Marina CMI [18]3 years ago
8 0
We are given an arithmetic sequence with
First term, a₁ = 6
Second term, a₂ = 2
Therefore the common difference is d = -4.

The n-th term is
a_{n} = a_{1} + (n-1)d \\ a_{n} = 6 - 4(n-1), \, for \, n \ge 1

Answer: 
a_{n} = 6 - 4(n-1); all integers where n ≥ 1

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