Re: Log Error
- To: mathgroup at smc.vnet.net
- Subject: [mg78839] Re: Log Error
- From: janos <janostothmeister at gmail.com>
- Date: Wed, 11 Jul 2007 06:03:28 -0400 (EDT)
- References: <f6vnds$qfr$1@smc.vnet.net>
The base of Log is 2.71, you should use Log[10,x-1]-2 etc. to obatin
what you thought.
Janos
Laurence Kohn =EDrta:
> 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 fo=
und
> 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 == 8.3=
8906.
>
> Is this a bug in mathematica or am I missing something here?