Q. Write an explicit formula for an, the nth term of the sequence 2,8,32,…Answer: an=
Identify Geometric Sequence: The given sequence is geometric because each term is obtained by multiplying the previous term by the same constant. To find the common ratio, divide the second term by the first term.r=28=4
Calculate Common Ratio: The first term of the sequence, a1, is 2. The common ratio, r, is 4. The nth term of a geometric sequence is given by the formula an=a1×r(n−1).
Find Explicit Formula: Substitute the values of a1 and r into the formula to get the explicit formula for the nth term.an=2×4(n−1)
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