已知lg2=a,lg3=b,求log2 12的值2为底数,12为真数!

问题描述:

已知lg2=a,lg3=b,求log2 12的值
2为底数,12为真数!

log2(12)
=log2(4)+log2(3)
=2+log2(3)
=2+lg3/lg2
=2+b/a