Processing Math: Done

From Förberedande kurs i matematik 1

Instead of always going back to the definition of the logarithm, it is better to learn to work with the log laws,

•  lg(ab)=lga+lgb

•  lgab=blga

and to simplify expressions first. By working in this way, one only needs, in principle, to learn that lg10=1.

In our case, we have

lg103=3lg10=31=3.