Mathematica 9 is now available
Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
1997
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 1997

[Date Index] [Thread Index] [Author Index]

Search the Archive

MatrixForm

  • To: mathgroup at smc.vnet.net
  • Subject: [mg8804] MatrixForm
  • From: Kent Day <kentd at ces.clemson.edu>
  • Date: Thu, 25 Sep 1997 12:26:40 -0400
  • Organization: Clemson University
  • Sender: owner-wri-mathgroup at wolfram.com

I am new to mathematica and am having a problem understanding the way it
uses MatrixForm. The manual says it only affects the look of the
equation and not the way it is processed however if I use it I get
"strange" results.

a={{a11,a12},{a21,a22}}
b={{b11,b12},{b21,b22}}

MatrixForm[a+b]
MatrixForm[a]+MatrixForm[b]
MatrixForm[a]+b

all yield different results. Only the first one being what I would've
expected i.e. a new matrix {{a11+b11,{a12+b12} etc.. the last one gives
the strangest result in which is each element of b is added to the
entrire a matrix.

any suggestions? also, once a function is in matrixForm as in 
f=MatrixForm[a] how can I get f back into list form (is there a ListForm
kind of command?)

if you reply could you cc my email 

hkowalc at eng.clemson.edu

thanks
Henri Kowalczyk


  • Prev by Date: Re: 3-Script Mesh option
  • Next by Date: RE: [Q] Why Integrate[1/x,x] <>
  • Previous by thread: Re: 3-Script Mesh option
  • Next by thread: Re: MatrixForm