Find a formula for the nth partial sum of the series and use it to find the series' sum. 9. +... +(- 1)" -1 5n-1 9- 1. 25 125 1 9 1- (-5) 45 (-5)" 15 O A. S= OB. 1+ 91- 91- (-5)h-1 (-5)-1 15 45 O C. Sn= O D. S,= 1 4. 1+5 1 1+

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter9: Sequences, Probability And Counting Theory
Section: Chapter Questions
Problem 25RE: Use the formula for the sum of the first nterms of a geometric series to find S9 , for the series...
icon
Related questions
Question
Question 8
Find a formula for the nth partial sum of the series and use it to find the series' sum.
9.
9.
+ ... +(- 1)n-1
125
9
+...
25
5h-1
1
91-
(-5)"
45
(-5)"
15
O A. Sn=
O B. S,=
S=
1
1+
1
1+5
1
1
91-
91-
(-5)n-1
15
(-5)n-1
45
O C. S=
O D. Sn=
1
1+
1
1+
4.
Transcribed Image Text:Find a formula for the nth partial sum of the series and use it to find the series' sum. 9. 9. + ... +(- 1)n-1 125 9 +... 25 5h-1 1 91- (-5)" 45 (-5)" 15 O A. Sn= O B. S,= S= 1 1+ 1 1+5 1 1 91- 91- (-5)n-1 15 (-5)n-1 45 O C. S= O D. Sn= 1 1+ 1 1+ 4.
Expert Solution
steps

Step by step

Solved in 3 steps with 3 images

Blurred answer
Recommended textbooks for you
College Algebra
College Algebra
Algebra
ISBN:
9781938168383
Author:
Jay Abramson
Publisher:
OpenStax
College Algebra
College Algebra
Algebra
ISBN:
9781337282291
Author:
Ron Larson
Publisher:
Cengage Learning
Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
Algebra
ISBN:
9781133382119
Author:
Swokowski
Publisher:
Cengage