Re: Log Error ( ? )
- To: mathgroup at smc.vnet.net
- Subject: [mg78922] Re: Log Error ( ? )
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Fri, 13 Jul 2007 05:55:28 -0400 (EDT)
- Organization: Uni Leipzig
- References: <f74rf5$7uj$1@smc.vnet.net>
- Reply-to: kuska at informatik.uni-leipzig.de
Hi, Log[] is the *natural* logarithm and Mathematica is perfectly right .. you mean: Plot[Log[10, x - 1] - 2, {x, 0, 101}] Regards Jens Larry wrote: > Hi, > > I had a question about something I found in Mathematica 5.2... I was plotting Log[x-1]-2 with x = {0,10} and y = {-10,5} and strangely found that the graph crossed the x-axes at approximately x == 8 ... > > It should be 101 of course, but it seemed like 8. Then I did an Nsolve with the equation set to 0, and low and behold got an answer x == 8.38906. > > Is this a bug in mathematica or am I missing something here? >