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Re: Mathematica and Matrices (From sci.math.symbolic)

• To: mathgroup
• Subject: Re: Mathematica and Matrices (From sci.math.symbolic)
• From: maeder at symcom.math.uiuc.edu Tue Mar 21 13:54:43 1989
• Date: Tue, 21 Mar 89 16:01:31 CST

> I have a Mathematica question.  I did the following:
> 
> In[1]:= y x . b - E[x . b]
> 
>             x.b
> Out[1]:= -E     + yx.b

I don't understand how you got that output from your input.  E[expr]
gives just that, E[expr]. Didn't you mean E^expr or Exp[expr] ? Is your
example a verbatim copy of the session?

Roman Maeder
maeder at symcom.math.uiuc.edu