Question

determine a soma das P.G. infinita (1\2, 1\6, 1\18,.....) e (3,1,1\3,....) 

> me ajudem por favor <

Answer 1

Sn = a1/(1-q)

(1\2, 1\6, 1\18,.....)

q = 1/3

 

Sn =

1/2/(1-1/3)

1/2/2/3

3/4

 

 

 (3,1,1\3,....)

q = 1/3

 

Sn =

a1/(1 - q)

3/(1 - 1/3)

3/(2/3)

9/2