已知lga=2.431,lgb=1.431,则b/a等于
问题描述：
已知lga=2.431,lgb=1.431,则b/a等于
答
lgb/a=1.431-2.431=-1.
b/a=1/10
答
lgb/a=1.431-2.431=-1.
b/a=e^-1.
=1/e
答
lgb-lga=lgb/a=-1,b/a=1/10