已知等比数列{an}满足an>0,n=1,2,…,且a5•a2n-5=22n(n
题型:选择题
问题:
已知等比数列{an}满足an>0,n=1,2,…,且a5•a2n-5=22n(n≥3),则当n≥1时,log2a1+log2a3+…+log2a2n-1=( )
A.(n-1)2
B.n2
C.(n+1)2
D.n2-1
已知等比数列{an}满足an>0,n=1,2,…,且a5•a2n-5=22n(n≥3),则当n≥1时,log2a1+log2a3+…+log2a2n-1=( )
A.(n-1)2
B.n2
C.(n+1)2
D.n2-1