an=a1*q^(n-1)=32*(1/2)^(n-1)=(1/2)^(-5)*(1/2)^(n-1)=(1/2)^(n-6)=2^(6-n),bn=1/n(log2a1+log2a2+…+log2an）=1/n(log2(2^5)+log2(2^4)+…+log2(2^(6-n)）=1/n(6-1+(6-2)+……+(6-n))=1/n[6n-n(n+1)/2]=6-(n+1)/2...