Re: machine precision in plot
- To: mathgroup at smc.vnet.net
- Subject: [mg65815] Re: [mg65745] machine precision in plot
- From: "David Park" <djmp at earthlink.net>
- Date: Mon, 17 Apr 2006 02:29:11 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Joerg,
How about...
Plot[P1[x * 10^-17], {x, 5.85, 7.15}]
David Park
djmp at earthlink.net
http://home.earthlink.net/~djmp/
From: Joerg Schaber [mailto:schaber at molgen.mpg.de]
To: mathgroup at smc.vnet.net
Hi,
I have defined a function that takes as arguments small values and also
returns small values:
In[237]:=
P1[7.5`*^-17]
Out[237]=
-2.1926`*^7
However, when plotting the function with
Plot[P1[x], {x, 5.85`*^-17, 7.15`*^-17}]
I get an error message:
Plot::"plld" Endpoints for x in {x, 5.85`*^-17, 7.15`*^-17} must have
distinct machine-precision numerical values.
I thought Mathematica can handle such small numbers.
Any hint?
best,
joerg