if sₙ=3ₙ+1, sₙ-1=4ₙ-1 then find aₙ.
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Step-by-step explanation:
the explanation is given above
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Answer:
Sn -Sn - 1 =an
3n + 1 - ( 4n-1)
3n+ 1 - 4n +1
=2 - n
is the answer
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