b1=-64 b q=1/2
b6=b1*q в степени (n-1)
b6=-64 * (1/2) ^5=-64*1/32=-2
b5=-64 * (1/2) ^4=-64*1/16=-4
S5 = (b5q-b1) / (q-1) = (-4*1/2+64) / (1/2-1) = (-2+64) / - 1/2=62/-1/2=-124
b1=-64 b q=1/2
b6=b1*q в степени (n-1)
b6=-64 * (1/2) ^5=-64*1/32=-2
b5=-64 * (1/2) ^4=-64*1/16=-4
S5 = (b5q-b1) / (q-1) = (-4*1/2+64) / (1/2-1) = (-2+64) / - 1/2=62/-1/2=-124