+0  
 
0
210
1
avatar+589 

Enter a recursive rule for the geometric sequence.

10, −80, 640, −5120, ...

a1=  ;  an= 

 Feb 7, 2018
 #1
avatar+96055 
+1

a1   = 10

 

an  =  -8 an-1

 

 

cool cool cool

 Feb 7, 2018

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