a3a4=(a1q)²(a1q³)=a1²q^5=4
log2(a1)+log2(a2)+...+log2(a6)
=log2(a1·a2·...·a6)
=log2(a1^6q^15)
=log2[(a1²q^5)³]
=3log2(4)
=3×2
=6
等比數(shù)列{an}中,an>0,a3*a4=4,則log2a1+log2a2+.log2a6=?
等比數(shù)列{an}中,an>0,a3*a4=4,則log2a1+log2a2+.log2a6=?
數(shù)學(xué)人氣：919 ℃時(shí)間：2020-04-16 02:01:48
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