// To determinethe echlon form
m=matrix([[2,5,7],[-5,7,2],[1,22,23]])
c=matrix([[25],[-4],[71]])

m
        
[ 2  5  7] //output
[-5  7  2]
[ 1 22 23]

c

[25] //output
[-4]
[71]

r=m.augment(c)

r

[ 2  5  7 25]
[-5  7  2 -4]
[ 1 22 23 71] //output

w=r.echelon_form()
w[0]
(1, 22, 23, 71) //output


w       

[  1  22  23  71] //output
[  0  39  39 117]
[  0   0   0   0]

Kreyszig-18.1-11-U (last edited 2010-12-18 11:24:18 by koumudi)