1)Find the partial sum sn of the geometric sequence that satisfies the given a= 5, r= 2 , n = 6
1)Find the partial sum sn of the geometric sequence that satisfies the given a= 5, r= 2 , n = 6
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:formula for sn with n = 7, and we have
(1-47)
Sn = 1
=D5461
%3D
(1-4)
Y=41
Thus this partial sum is 5461.
Homework
1)Find the partial sum Sn of the geometric sequence that satisfies the given
a= 5, r= 2 , n = 6
2) Find the sum
1+3+9 +. . .+ 2187
Example 5 Finding a Partial Sum of a Geometric Sequence
Find the sum
Ek=1
k-1
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