b1=-8 b2=4 q=b2^b1=4^(-8)=-1/2
S6=b1(q^n -1)= -8*((-1/2)^6 -1) = -8*(1/64 - 1)= -8* (-63/64) = 63/8 : (-3/2)= 63/8 * (-2/3)= -5,25
q-1 -1/2 - 1 -3/2 -3/2
b1=-8 b2=4 q=b2^b1=4^(-8)=-1/2
S6=b1(q^n -1)= -8*((-1/2)^6 -1) = -8*(1/64 - 1)= -8* (-63/64) = 63/8 : (-3/2)= 63/8 * (-2/3)= -5,25
q-1 -1/2 - 1 -3/2 -3/2