Re: Log Error
- To: mathgroup at smc.vnet.net
- Subject: [mg78849] Re: [mg78805] Log Error
- From: DrMajorBob <DrMajorBob at bigfoot.com>
- Date: Wed, 11 Jul 2007 06:08:45 -0400 (EDT)
- References: <200707101027.GAA26861@smc.vnet.net>
Log's default base is Napierian -- \[ExponentialE] -- not decimal.
Log[10, 100]
2
Plot[Log[10, x - 1] - 2, {x, 0, 10}]
Bobby
On Tue, 10 Jul 2007 05:27:07 -0500, 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?
>
>
>
>
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- References:
- Log Error
- From: Laurence Kohn <L_Kohn@Nesbittgraphics.com>
- Log Error