that includes a column for the recently released version 4.2 of Rubi. The bottom line shows a modest improvement from 85 to 88 in Rubi's grade. This is due to improvements made in the rules for integrating expressions involving inverse trig functions.
Also listed in the pdf file are the 50 Charlwood integrals and corresponding optimal antiderivatives. Note that the antiderivative for problem #35 is slightly simpler than in previous versions.