Cosmetic change: I'd restate the pi term as log(1+sqrt2) pi /2. --Rich ________________________________________ From: math-fun-bounces@mailman.xmission.com [math-fun-bounces@mailman.xmission.com] On Behalf Of rwg@sdf.lonestar.org [rwg@sdf.lonestar.org] Sent: Wednesday, June 11, 2008 2:26 AM To: math-fun@mailman.xmission.com Cc: rwg@sdf.lonestar.org Subject: [math-fun] Missing Catalan identity from http://www.cs.cmu.edu/~adamchik/articles/catalan/catalan.htm In[1]:=Integrate[ArcSin[Sinh[t]], {t, 0, ArcSinh[1]}] Out[1]=-Catalan + (1/4)*Pi*Log[3 + 2*Sqrt[2]] (Not the trivial changevar of the ArcSinh[Sin[]].) _______________________________________________ math-fun mailing list math-fun@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/math-fun