Which recursive formula can be used to define this sequence for n > 1?−8,4,16,28,40,52,…Choices:(A) an=an−1+an−1+12(B) an=121an−1(C) an=an−1+12(D) an=7an−1
Q. Which recursive formula can be used to define this sequence for n>1?−8,4,16,28,40,52,…Choices:(A) an=an−1+an−1+12(B) an=121an−1(C) an=an−1+12(D) an=7an−1
Analyze Sequence Type: Analyze the sequence to determine if it is arithmetic or geometric.The sequence given is −8,4,16,28,40,52,…To determine if it is arithmetic, we check if the difference between consecutive terms is constant.4−(−8)=12, 16−4=12, 28−16=12, 40−28=12, 52−40=12Since the difference is constant, the sequence is arithmetic with a common difference of 12.
Identify Recursive Formula: Identify the recursive formula for the arithmetic sequence.Since the common difference is 12, the recursive formula will be of the form an=a(n−1)+d, where d is the common difference.Substituting 12 for d, we get the recursive formula: an=a(n−1)+12
Match with Choices: Match the recursive formula with the given choices.The correct recursive formula is an=an−1+12.Comparing this with the given choices, we find that choice (C) an=an−1+12 matches our formula.
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