NMinimize Bug in Mathematica 7.0?

*To*: mathgroup at smc.vnet.net*Subject*: [mg96197] NMinimize Bug in Mathematica 7.0?*From*: appris at att.net*Date*: Mon, 9 Feb 2009 05:33:37 -0500 (EST)

Here is an example from Mathematica's user's guide: In[8]:= NMinimize[x^4 - 3 x^2 + x, x] Out[8]= {-3.513905039, {x -> -1.300839566}} however, trying to replicate it, I get the following: In[2]:= NMinimize[x^4 - 3 x^2 + x, x] Out[2]= {-1.070230182, {x -> 1.130901122}} One way to find the global min, I had to use a constraint such as x<0. Has anyone come across such a problem? In[3]:= $Version Out[3]= "7.0 for Microsoft Windows (32-bit) (November 10, 2008)" Thanks.

**Follow-Ups**:**Re: NMinimize Bug in Mathematica 7.0?***From:*"Jaccard Florian" <Florian.Jaccard@he-arc.ch>

**Re: NMinimize Bug in Mathematica 7.0?***From:*Brett Champion <brettc@wolfram.com>