[R] How to define new matrix based on an elementary row oper

Cuckovic Paik cuckovic.paik at gmail.com
Sun Sep 12 17:27:06 CEST 2010


I appreciate all you help. This is only for instructional purpose:

A = matrix(c(0,1,1,-2,-3,1,2,-1,0,2,2,4,1,-3,-2,1,-4,-7,-1,-19), ncol=5,
byrow=T) 
B =matrix(sample(c(0,1,1,-2,-3,1,2,-1,0,2,2,4,1,-3,-2,1,-4,-7,-1,-19),),
ncol=5, byrow=T) 

Which print func( A, B,  A+B) can print the resulting matrices A and B and
A+B  in the following format?

     [,1] [,2] [,3] [,4] [,5]             [,1] [,2] [,3] [,4] [,5]           
[,1]  [,2]  [,3]  [,4] [,5]
[1,]    0    1    1   -2   -3       [1,]  2   -1    0    2     1        [1,] 
2     0     1     0    -2
[2,]    1    2   -1    0    2   +   [2,]  1   -4    2   -2    -2   =  [2,] 
2    -2     1    -2     0
[3,]    2    4    1   -3   -2       [3,] -3    1   -7    1    -1       [3,]
-1     5    -6    -2    -3
[4,]    1   -4   -7   -1  -19      [4,] -3    0    4  -19     1      [4,] -2   
-4    -3   -20   -18


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