Find a formula for the nth term of the following sequences: (a) 1, 1, 1, ... An = 4 9 (−1) n+1 1 n 2 % 3 4 (b) 1, 1, 1, ... 4' 5 6 bn n+1 - n+2 - Assume a starting index of n = 1.

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A: The expression ∑i=14ai can be expanded as follows. ∑i=14ai=a1+a2+a3+a4   It is provided that a1=4 .…

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A: By assuming the values of n and checking with options we will get the answer

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A: The given sequence is 15, 49, 913, 1617,⋯ Here numerators of the fractions are 1, 4, 9, 16 which are…

Q: a₁ = -1, and for n = 2, 3, 4, ... What is the formula for the nth term nonrecursively of this…

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Q: Sn = Find a formula for Sn, n ≥ 1 for the sequence -2, 1, 6, 13, 22...

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Q: Find the first three terms of the a, = 4 sequence: an+1= 5n + 1 an 6. O 4, 4, 22/3... O 4, 22/3,…

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