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Chapter 12: Q 36. (page 825)

In Problems 31–38, find the nth term anof each geometric sequence. When given, r is the common ratio.

a2=7;r=13

Short Answer

Expert verified

Thea1term is 21 andan=21·13n-1

Step by step solution

01

Step 1. Write the given information.

Given common ratio isr=13anda2=7

02

Step 2. 

The formula for the nth term isan=a1·rn-1

a2=a1=a·132-17=a1·13a1=21

an=21·13n-1

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Most popular questions from this chapter

In Problems 37–50, a sequence is defined recursively. Write down the first five terms.

a1=2;an=an-12

In Problems 61–70, express each sum using summation notation.

1e+2e2+3e3+.........+nen

In Problems 37–50, a sequence is defined recursively. Write down the first five terms.

a1=-1;a2=1;an=an-2+nan-1

In Problems 17–28, write down the first five terms of each sequence.

an=nn+2

In Problems 61–70, express each sum using summation notation.

13+23+33+....+83
See all solutions

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