Найдем b1:
b6=b1*q^5
1/2=b1*1/32
b1=16
S6=(b6*q-b1)/q-1= (63/4)/0.5=31.5
ответ:31.5
b6=1/2
q=1/2
bn=b1*q^(n-1)
b1*(1/2)^5=1/2
b1/32=1/2
S=b1/(1-q)
S=16/(1-1/2)= 32
Найдем b1:
b6=b1*q^5
1/2=b1*1/32
b1=16
S6=(b6*q-b1)/q-1= (63/4)/0.5=31.5
ответ:31.5
b6=1/2
q=1/2
bn=b1*q^(n-1)
b1*(1/2)^5=1/2
b1/32=1/2
b1=16
S=b1/(1-q)
S=16/(1-1/2)= 32