Geometric Sequences and Series Date Period
Kuta Software - Infinite Precalculus
Name___________________________________
Geometric Sequences and Series
Date________________ Period____
Determine if the sequence is geometric. If it is, find the common ratio, the 8th term, and the explicit formula.
1) , , , , ...
2)
,
,
,
, ...
3) , , , , ...
4) , , , , ...
Given the explicit formula for a geometric sequence find the common ratio, the term named in the problem, and the recursive formula.
( ) 5) a n
n
Find a
6) a ()n n Find a
Given two terms in a geometric sequence find the common ratio, the explicit formula, and the recursive formula.
7) a and a
8) a and a
Find the missing term or terms in each geometric sequence.
9) ..., , ___, ___, , ...
10)
...,
,
___,
___,
___,
,
...
-1-
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Worksheet by Kuta Software LLC
Evaluate each geometric series described. 11) ..., n
12) ..., n
13) a , r, n
15) k k
17) i i
14) a , r, n
( ) 16) m
m
18) n n
Determine the number of terms n in each geometric series.
n
19) i i
20) a , r, S
n
Determine if each geometric series converges or diverges.
21) ...
22)
...
( ) 23) k
k
24) i i
Evaluate each infinite geometric series described.
( ) i
25) i
26) i i
( ) 27) m m
28)
k
k
-2-
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Worksheet by Kuta Software LLC
Kuta Software - Infinite Precalculus
Name___________________________________
Geometric Sequences and Series
Date________________ Period____
Determine if the sequence is geometric. If it is, find the common ratio, the 8th term, and the explicit formula.
1) , , , , ...
Common Ratio: r a
Explicit: a n n
2)
,
,
,
, ...
Common Ratio: r
a
( ) Explicit: a n
n
3) , , , , ... Not geometric
4) , , , , ...
Common Ratio: r a
Explicit: a n n
Given the explicit formula for a geometric sequence find the common ratio, the term named in the problem, and the recursive formula.
( ) 5) a n Common Ratio: r
n
Find a
a
Recursive: a a
n
n
a
6) a ()n n Find a
Common Ratio: r
a
Recursive: a a
n
n
a
Given two terms in a geometric sequence find the common ratio, the explicit formula, and the recursive formula.
7) a and a Common Ratio: r
( ) Explicit: a n
n
Recursive: a a
n
n
8) a and a
Common Ratio: r
Explicit: a n n
Recursive: a a
n
n
a
a Find the missing term or terms in ea ch geometric sequence.
9) ..., , ___, ___, , ... ,
10)
...,
,
___,
___,
___,
,
...
, ,
-1-
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Worksheet by Kuta Software LLC
Evaluate each geometric series described. 11) ..., n
12) ..., n
13) a , r, n
14) a , r, n
15) k k
17) i i
( ) 16) m
m
18) n n
Determine the number of terms n in each geometric series.
n
19) i i
20) a , r, S
n
Determine if each geometric series converges or diverges.
21) ... Diverges
22)
...
Converges
( ) 23) k
k
Converges
24) i i Diverges
Evaluate each infinite geometric series described.
( ) i
25) i
( ) 27) m
m
26) i i
28)
k
k
No sum
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-2-
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Worksheet by Kuta Software LLC
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