log2(50)-2log2(5)

题目

log2(50)-2log2(5)
已知log6 2=0.3869，求log6 3

答案

log2(50)-2log2(5)
=log2(50)-log2(5) ²
=log2(50/25)
=log2（2）
=1
log6 3
=log6 6-log6 2
=l -0.3869
=0.6131