Log b c 1 log c b Logarithm change of base rule. Parentheses are sometimes added for clarity giving lnx log e x or logx. Expressed mathematically x is the logarithm of n to the base b if bx n in which case one writes x log b n.
Calculate the logarithm of this approximated number Calculate the percentage error and multiply by and add or subtract as appropriate.
Parentheses are sometimes added for clarity giving lnx log e x or logx. In the same fashion since 10 2 100 then 2 log 10 100. Expressed mathematically x is the logarithm of n to the base b if bx n in which case one writes x log b n. The base e logarithm loge x l o g e x has its own notation lnx l n x.