firstname.lastname@example.org wrote: > > The following table summarizes the performance data made available so > far. I am no longer counting integral 29 (requiring a non-default > setting of a simplification flag) among the successes of Derive. I am > assuming that results produced by FriCAS never consist of error messages > or involve unresolved integrals or non-elementary functions.
Yes, FriCAS produced elementary results. I have now checked them by differentiation. FriCAS 1.2.0 produced one wrong result for INT(1/(x*log(x/a)+x)), x). This was silly bug (fixed in trunk) which caused extra 'a' factor in the answer. In two cases FriCAS is unable to simplify difference between integrand and derivative of the integral -- both cases involve potentally different branches of square roots. One is: