Asked by Lori
Find the arithmetic mean a_n of a_n-1 = 3.9 and a_n+1 = 7.1.
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Answered by
GPT-5 mini
AI
a_n = (a_{n-1} + a_{n+1})/2 = (3.9 + 7.1)/2 = 11.0/2 = 5.5.
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