>>>>> "Andreas" == Andreas Volzwrites: Andreas> the log() function in maxima seems to be the same what "ln" on my Andreas> calculator is. But where do I find the log_10() function? And is there Andreas> an ld() function for log_2()? Perhaps this will work for you: log10(x) := log(x)/log(10); log2(x) := log(x)/log(2); Ray