[HP-Prime CAS] Automatic Simplification (Direct Answer) CompSystems Member Posts: 213 Threads: 60 Joined: Mar 2013 07-25-2013, 11:51 AM Richard Berler Member Posts: 109 Threads: 38 Joined: Dec 2012 07-25-2013, 01:32 PM Your last example that should yield cosh(x) had an incorrect numerator on the Prime example...you used e^x + e^y instead of e^x + e^-x. Thomas Klemm Senior Member Posts: 735 Threads: 34 Joined: May 2007 07-25-2013, 02:43 PM Still the denominator could be simplified: Sqrt[(Exp[x] + Exp[-x])^2 - (Exp[x] - Exp[-x])^2] = 2 CompSystems Member Posts: 213 Threads: 60 Joined: Mar 2013 07-25-2013, 04:39 PM Gilles Carpentier Senior Member Posts: 468 Threads: 17 Joined: May 2011 07-26-2013, 06:52 PM EDIT forget all of this ... my error, I read n! instead of n ..... Edited: 26 July 2013, 7:37 p.m. after one or more responses were posted Edwin Junior Member Posts: 9 Threads: 0 Joined: Sep 2012 07-26-2013, 07:04 PM ```if n=1 the return is 1. 1!=1 and by definition 0!=1 ``` Edited: 26 July 2013, 7:15 p.m. Gilles Carpentier Senior Member Posts: 468 Threads: 17 Joined: May 2011 07-26-2013, 07:20 PM Oops, you are right ! Never good to post after midnight :O Edited: 26 July 2013, 7:27 p.m. « Next Oldest | Next Newest »

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