LA+CH3+EX6+SOLVED+BY+주영은

2067 days ago by math2013

#elementary_matrix=matrix([[1,0,0], [0,1,0],[0,0,1]]) E1=elementary_matrix(3, row1=1, row2=2) E2=elementary_matrix(3, row1=1, scale=2) E3=elementary_matrix(3, row1=2, row2=0, scale=-2) print "E1 =" print E1 print print "E2 =" print E2 print print "E3 =" print E3 
       
E1 =
[1 0 0]
[0 0 1]
[0 1 0]

E2 =
[1 0 0]
[0 2 0]
[0 0 1]

E3 =
[ 1  0  0]
[ 0  1  0]
[-2  0  1]
E1 =
[1 0 0]
[0 0 1]
[0 1 0]

E2 =
[1 0 0]
[0 2 0]
[0 0 1]

E3 =
[ 1  0  0]
[ 0  1  0]
[-2  0  1]
 
       
Traceback (click to the left of this block for traceback)
...
NameError: name 'row1' is not defined
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "_sage_input_7.py", line 10, in <module>
    exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 -*-\\n" + _support_.preparse_worksheet_cell(base64.b64decode("cm93MQ=="),globals())+"\\n"); execfile(os.path.abspath("___code___.py"))
  File "", line 1, in <module>
    
  File "/tmp/tmpp4eFPB/___code___.py", line 2, in <module>
    exec compile(u'row1
  File "", line 1, in <module>
    
NameError: name 'row1' is not defined