Respostas

2013-07-18T09:56:37-03:00
Razão = q =  -2

Sn = -2 x (1 - (-2^6)/ 1 - (-2)

Sn = -2 x ( 1 -64)/3
Sn = -2 x -63/3
Sn = -2 x (-21)
Sn = 42
1 5 1