Common Ratio of Infinite Geometric Series

Project ID: 
5000000056
Accepted: 
SubArea: 
Template: 
Question: 
In each line of the table, mark the interval to which the common ratio of the given infinite geometric series belongs.
Answer Header 1: 
$(-\infty;-1)$
Answer Header 2: 
$(-1;1)$
Answer Header 3: 
$(1;\infty)$
Question Row 1: 
$\sum\limits_{n=1}^{\infty}\left(\frac13\right)^{1-n}$
Answer Row 1: 
3
Question Row 2: 
$\sum\limits_{n=1}^{\infty}(-1)^n\cdot3^{n-1}$
Answer Row 2: 
1
Question Row 3: 
$\sum\limits_{n=1}^{\infty}\left(\frac13\right)^{n-2}$
Answer Row 3: 
2
Question Row 4: 
$\sum\limits_{n=1}^{\infty}(-1)^n\cdot\left(\frac13\right)^{2-n}$
Answer Row 4: 
1
Question Row 5: 
$\sum\limits_{n=1}^{\infty}3^{4-n}$
Answer Row 5: 
2
Question Row 6: 
$\sum\limits_{n=1}^{\infty}3^{n+2}$
Answer Row 6: 
3
Question Row 7: 
$\sum\limits_{n=1}^{\infty}\left(-\frac23\right)^n\cdot3^n$
Answer Row 7: 
1
Tex: 
% tiket 32601 \MsrTabulka[1pt]{0.35\linewidth}{0.65\linewidth} \pocetsloupcu{3}