Find the explicit formula.
Math 442 Practice with sequences and series
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Find the explicit formula. 1) , , , , ...
3) , , , , ...
Find the recursive formula. 5) , , , , ...
Name___________________________________ Date________________
2) , , , , ... 4) , , , , ...
6) , , , , ...
Given the first term and the common ratio of a geometric sequence find the first five terms.
7) a , r
8) a , r
Given the explicit formula for a geometric sequence find the first five terms.
9) a n n
( ) n
10) a
n
Given the recursive formula for a geometric sequence find the first five terms.
11) a a
n
n
a
12) a a
n
n
a
Given two terms in a geometric sequence find the common ratio.
13) a and a
14) a and a
15) a and a
16) a and a
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-1-
Worksheet by Kuta Software LLC
Given two terms in a geometric sequence find the term named in the problem, the explicit formula, and the recursive formula.
17) a and a
Find a
18) a and a
Find a
19) a and a
Find a
20) a and a
Find a
21) a and a Find a
22) a and a
Find a
Find the missing term or terms in each arithmetic sequence.
23) ..., , ___, ___, ___, ___, , ...
24) ..., , ___, ___, ___, , ...
Find the missing term or terms in each geometric sequence.
25) ..., , ___, ___, ___, , ...
26) ..., , ___, ___, ___, , ...
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-2-
Worksheet by Kuta Software LLC
Evaluate each arithmetic series described.
27) (i) i
29) (m) m
31) (n) n
33) m m
28) (i) i
30) (i) i
32) (k) k
34) (i) i
35) a , d, n
36) a , d, n
Determine the number of terms n in each arithmetic series.
37) a , a , S
n
n
38) a , a , S
n
n
Evaluate each geometric series described.
39) ()i i
40)
k
k
Determine the number of terms n in each geometric series.
41) a , r, S
n
42) a , r, S
n
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-3-
Worksheet by Kuta Software LLC
Math 442 Practice with sequences and series
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Name___________________________________ Date________________
Find the explicit formula.
1) , , , , ...
a ()n n
3) , , , , ... a n
n
Find the recursive formula.
2) , , , , ... a n
n
4) , , , , ... a n
n
5) , , , , ...
anan a
6) , , , , ...
anan a
Given the first term and the common ratio of a geometric sequence find the first five terms.
7) a , r , , , ,
8) a , r , , , ,
Given the explicit formula for a geometric sequence find the first five terms.
9) a n n , , , ,
( ) n
10) a
, , , ,
n
Given the recursive formula for a geometric sequence find the first five terms.
11) a a , , , ,
n
n
a
12) a a , , , ,
n
n
a
Given two terms in a geometric sequence find the common ratio.
13) a and a
r
15) a and a
r
14) a and a
r
16) a and a
r
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-1-
Worksheet by Kuta Software LLC
Given two terms in a geometric sequence find the term named in the problem, the explicit formula, and the recursive formula.
17) a and a
Find a
a
Explicit: a ()n n
Recursive: a a
n
n
a
18) a and a
Find a
a
Explicit: a ()n n
Recursive: a a
n
n
a
19) a and a
Find a
a
Explicit: a ()n n
Recursive: a a
n
n
a
20) a and a a
Find a
( ) n
Explicit: a
n
Recursive: a a
n
n
a
21) a and a Find a
a
Explicit: a n n
Recursive: a a
n
n
a
22) a and a a
Find a
( ) n
Explicit: a
n
Recursive: a a
n
n
a
Find the missing term or terms in each arithmetic sequence.
23) ..., , ___, ___, ___, ___, , ... , , ,
24) ..., , ___, ___, ___, , ... , ,
Find the missing term or terms in each geometric sequence.
25) ..., , ___, ___, ___, , ... , ,
26) ..., , ___, ___, ___, , ... , ,
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-2-
Worksheet by Kuta Software LLC
Evaluate each arithmetic series described.
27) (i) i
29) (m) m
31) (n) n
33) m m
28) (i) i
30) (i) i
32) (k) k
34) (i) i
35) a , d, n
36) a , d, n
Determine the number of terms n in each arithmetic series.
37) a , a , S
n
n
Evaluate each geometric series described.
38) a , a , S
n
n
39) ()i i
40)
k
k
Determine the number of terms n in each geometric series.
41) a , r, S
n
42) a , r, S
n
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-3-
Worksheet by Kuta Software LLC
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