lg2约等于0.3010,lg3约等于0.4771,求lg1.44的值
问题描述:
lg2约等于0.3010,lg3约等于0.4771,求lg1.44的值
答
lg1.44=lg(144/100)=lg144-lg100=lg(2*2*2*2*3*3)-lg(10*10)
=lg(2^4*3^2)-lg(10^2)=4*lg2+2*lg3-2=2.1582-2=0.1582