Find a formula for the nth partial sum of the series and use it to find the series' sum if the series converges.
+ 
+ 
+ ... + 
+ ...
A. 
; 7
B. 
; 7
C. 
; 7
D. 
; 7
Answer: C
Mathematics
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A. function B. not a function
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13 in. 9 in.4 in.
A. 
B. 
C. 
D. 
E. 
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Mathematics