From: SourceForge.net <noreply@so...>  20070130 14:41:07

Bugs item #1646761, was opened at 20070128 22:08 Message generated for change (Comment added) made by willisbl You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=1646761&group_id=4933 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: None Group: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: Stavros Macrakis (macrakis) Assigned to: Nobody/Anonymous (nobody) Summary: limit atanh @ 1 / 1 all wrong... Initial Comment: limit(atanh(x),x,1) => minf NO This should be complex infinity (INFINITY) since for x>1, the imagpart = %pi/2 limit(2*atanh(x),x,1) => ERROR: The number 1 isn't in the domain of atanh Well, that's why I'm trying to take the limit! limit( atanh(a1)log(a)/2 , a, 0) => domain error but as taylor will show you, it is finite: log(2)/2. Same problems at 1.  >Comment By: Barton Willis (willisbl) Date: 20070130 08:41 Message: Logged In: YES user_id=895922 Originator: NO By the way, for atanh(1.0) or atanh(1.0), GCL prints a silly message: (%i45) atanh(1.0); Maxima encountered a Lisp error: Error in PROGN [or a callee]: The argument, 1.0, is a logarithmic singularity. Don't be foolish, GLS.  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=1646761&group_id=4933 