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Re: Baffling change to partial derivative in version 5.1


"Steven HANCOCK" <Steven.Hancock at cern.ch> news:djcgvr$6n9$1 at smc.vnet.net...
>
> Merely changing the spelling of the variable from t to time does not
> return zero in version 4.2.
>                             Thanks, Steve.
>

I will never abandon Mathematica 4.0!

 In[1]:= $Version
Out[1]= "4.0 for Microsoft Windows (April 21, 1999)"

In[2]:= D[x y, time, NonConstants -> {x}]
Out[2]= y D[x, time, NonConstants -> {x}] 


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