1 1 1 1 1 1 1 1 1 1 1 1
>> U=triu(a,1) U =
Columns 1 through 6
0 1
0 1
0 1
0 1
0 1
0 0
0 0
0 0
0 0
0 0
Columns 7 through 10
1 1 1 1 1 1 0 0 0 0
1 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 0 0 - 11 -
1 1 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 0 0 1 1 1 1 0 0 0 0 0 0
>> D=tril(A,-1) D =
Columns 1 through 6
0 0 0 0 0 0
1 0 0 0 0 0
1 0
1 0
1 0
1 0
1 1
1 1
1 1
1 1
Columns 7 through 10
0 0 0 0 0 0 0 1 1 1
>> Q=D+U+F Q =
1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 - 12 -
0 0 1 0 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
0 0 0 1 1 1 1 1
Columns 1 through 6
1024 1 1 1 1 1
1 1024 1 1 1 1
1 1 1024 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1024
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
Columns 7 through 10
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1024 1 1 1 1024 1 1 1 1024 1 1 1 ??10?10??10? （４）??1010??10?????????
???10?10?10???10?10- 13 -
1024 1 1 1024 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1024
?100?120（５） ???0??0? a=10:10:100 ?????????11?10???0
a =
Columns 1 through 7
10 20 60 70
Columns 8 through 10
80 90 >> A=diag(a) A =
Columns 1 through 7
10 0 0 0
0 20 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 60 0
0 0 0 70
0 0 0 0
0 0 0 0
0 0 0 0
Columns 8 through 10
30 100 0 0 30 0 0 0 0 0 0 0 - 14 -
40 0 0 0 40 0 0 0 0 0 0 50 0 0 0 0 50 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 80 0 0 0 90 0 0
>> a=ones(10) a =
Columns 1 through 7
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
Columns 8 through 10
1 1 1 1 1 1 0 100 1 1 1 1 1 1 1 1 1 1 1 1 1
- 15 -
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1