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MathGroup Archive 1995

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Help on use of Packages

  • Subject: [mg2175] Help on use of Packages
  • From: zheng at risky.ecs.umass.edu (Yuan Zheng)
  • Date: Thu, 12 Oct 1995 05:58:24 GMT
  • Approved: usenet@wri.com
  • Distribution: local
  • Newsgroups: wri.mathgroup
  • Organization: University of Massachusetts, Amherst
  • Sender: daemon at wri.com ( )

Hi, 

I have the following problem when I use the LinearAlgebra`MatrixManipulation
Package. I also use Math2.2 for DOS and wnmath2.2 notebook. All of them have
the same result.

I am new to the Mathematica. Are there something I am doing wrong? I followed
the exact procedure described on pp 218-219 in the book Guide to Standard
Mathematica Packages Version 2.2.

I need to do a lot of matrix manipulations in my symbolic computation. Could
somebody help me to solve this problem?


Thanks


Yuan Zheng
Dept of Mechanical Engineering
Umass, Amherst



The following is the screen display.



===============================================
Mathematica 2.2 for DEC RISC
Copyright 1988-93 Wolfram Research, Inc.
 -- Terminal graphics initialized -- 

In[1]:= 
In[2]:= a = {{a11,a12},{a21,a22}}//MatrixForm 
Out[2]//MatrixForm= a11   a12

                    a21   a22

In[3]:= b = {{b11,b12},{b21,b22}}//MatrixForm
Out[3]//MatrixForm= b11   b12

                    b21   b22

In[4]:= cc = AppendColumns[a,b]//MatrixForm
Out[4]//MatrixForm= AppendColumns[a11   a12, b11   b12]

                                  a21   a22  b21   b22

In[5]:= Dimensions[cc]
Out[5]= {1}

In[6]:= dd = AppendRows[a,b]//MatrixForm
Out[6]//MatrixForm= AppendRows[a11   a12, b11   b12]

                               a21   a22  b21   b22

In[7]:= Dimensions[dd]
Out[7]= {1}

In[8]:= ee = BlockMatrix[ { {a,b},{b, {{0,0},{0,0}}}}]//MatrixForm
Out[8]//MatrixForm= 
 
    AppendColumns[AppendRows[a11   a12, b11   b12], 

>                            a21   a22  b21   b22
     
    >   AppendRows[b11   b12, {{0, 0}, {0, 0}}]]

                   b21   b22

In[9]:= Dimensions[ee]
Out[9]= {1}

In[10]:= Quit



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