Re: Baffling change to partial derivative in version 5.1

*To*: mathgroup at smc.vnet.net*Subject*: [mg61599] Re: Baffling change to partial derivative in version 5.1*From*: Bill Rowe <readnewsciv at earthlink.net>*Date*: Sun, 23 Oct 2005 05:46:06 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

On 10/22/05 at 12:35 AM, Steven.Hancock at cern.ch (Steven HANCOCK) wrote: >Please, can anyone explain (or even just reproduce) the following >behaviour? >In[1]:= $Version >Out[1]= 5.1 for Microsoft Windows (October 25, 2004) >In[2]:= $ReleaseNumber >Out[2]= 0 >In[3]:= D[x y, t, NonConstants->{x}] >Out[3]= y D[x, t, NonConstants -> {x}] >In[4]:= D[x y, time, NonConstants->{x}] >Out[4]= 0 I get exactly the same behavior with In[3]:= $Version Out[3]= "5.2 for Mac OS X (June 20, 2005)" In[4]:= $ReleaseNumber Out[4]= 0 Clearly this is a bug since the result should be independent of the variable names -- To reply via email subtract one hundred and four