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2 votes
Write an

explicit formula for
then
th
an.
term of the sequence 45, 15,5. ....

User Tom Resing
by
8.3k points

1 Answer

2 votes

Answer:

The sequence above is a geometric sequence

For an nth in a geometric sequence


u(n) = a {r}^(n - 1)

where n is the number of terms

a is the first term

r is the common ratio

From the question

a = 45

r = 15 / 45

The explicit formula for the sequence is

U(n) = 45(1/3)^n-1

Hope this helps you

User Davidforneron
by
8.3k points

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