What is the explicit rule for the geometric sequence? a1=4; an=1/3 x an-1

Mathematics

1 answer:

MArishka [77]3 years ago

3 0

Answer:

Step-by-step explanation:

The explicit rule for a geometric sequence with first term a1 and common ratio r is ...

an = a1·r^(n-1)

The factor in the recursive rule tells you the common ratio is 1/3, so the explicit rule is ...

an = 4·(1/3)^(n-1) . . . . . . matches choice C

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