Re: Log Error
- To: mathgroup at smc.vnet.net
- Subject: [mg78874] Re: [mg78805] Log Error
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Wed, 11 Jul 2007 06:21:58 -0400 (EDT)
- Reply-to: hanlonr at cox.net
Log[z] or Log[E, z] is the natural log (base e) if you want log base 10 use Log[10, z]
Bob Hanlon
---- Laurence Kohn <L_Kohn at Nesbittgraphics.com> 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?
>
>
>
>