>From the maxima help: Function: log (x) Represents the natural (base e) logarithm of x. Maxima does not have a built-in function for the base 10 logarithm or other bases. log10(x) := log(x) / log(10) is a useful definition.
The definition ln(x) has never existed in Maxima. This is not a wxmaxima or maxima problem. This should not block the upgrade to maxima 5.19.2 If you do: wxplot2d(log(x),[x,0,50]); you get no errors. Andres
