+0  
 

Best Answer 

 #1
avatar+17747 
+5

To go from term to term, multiply by 5.

To be a convergent geometric series, the number that you multiply by must be a fraction between -1 and 1 (and not including either -1 or 1).

Since the common ratio (the number you multiply by) is not a fraction between -1 and 1, it doesn't converge.

 Apr 14, 2015
 #1
avatar+17747 
+5
Best Answer

To go from term to term, multiply by 5.

To be a convergent geometric series, the number that you multiply by must be a fraction between -1 and 1 (and not including either -1 or 1).

Since the common ratio (the number you multiply by) is not a fraction between -1 and 1, it doesn't converge.

geno3141 Apr 14, 2015

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