What is the explicit rule for this geometric sequence? 2, 6, 18, 54, … an=3⋅2^n an=2⋅3^n an=2⋅3^n−1 an=3⋅2^n−1

asked May 27, 2017 210k views

4 votes

What is the explicit rule for this geometric sequence?

2, 6, 18, 54, …

an=3⋅2^n

an=2⋅3^n

an=2⋅3^n−1

an=3⋅2^n−1

by Lpt

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2 votes

2.3=6
6.3=18
18.3=54
.
.
.
r(q)=3
--------------------------
an=a1q^n-1
an=2.3^n-1

Tony Morris answered May 31, 2017

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