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In a go the product of the first four terms is 4 and the second d term is the reciprocal of the fourth term . The sum of infinite terms of the gp is? -8,8,-8/3,8/3 All the four are to be proved

In a go the product of the first four terms is 4 and the second d term is the reciprocal of the fourth term .    
The sum of infinite terms of the gp is?
 
-8,8,-8/3,8/3
All the four are to be proved

Grade:

1 Answers

Arun
25750 Points
5 years ago
 

let 4 nos be a/r2,a/r,ar,ar2.

a4 = 4

a = 21/2

ar2 = r/a

r = 1/2

sum of infinite terms of GP = a/1-r = 8 

 

Regards

Arun

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