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taleiayarbough4544
30.06.2019 •
Mathematics
Consider the sequence below. 3, 1, 1/3, 1/ select the explicit function which defines the sequence. a.) f(n) = 1/3 • 2^(n - 1) b.) f(n) = 2 • (1/3)^(n - 1) c.) f(n) = 1/3 • 3^(n - 1) d.) f(n) = 3 • (1/3)^(n - 1)
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Ответ:
The explicit formula that defines the sequence is
EXPLANATION
The given sequence is
The first term of this sequence is
We can find the common ratio by expressing a subsequent term over a previous term and simplifying it.
The common ratio is
The formula for finding the nth term of the given geometric sequence is given by,
We now substitute the value of the first term and the common ratio in to the above formula to obtain,
The correct answer is option D.
Ответ: