Row Echelon Form

[CatchThis2]

Reduce the matrix-

 

[arthur ohlsten]

-1 1 -9
2 -3 2
-2 1 -14

multiply 1st row by 2 and add to 2nd row
" " " " -2 " " " 3rd "

-1 1 -9
0 -1 -16
0 -1 4

multiply 2nd row by 1 and add to 1st row
" " " " -1 " " " 3rd "

1 0 -25
0 -1 -16
0 0 20

multiply 3rd row by 16/20 and add to 2nd row
" " " " 25/20 and add to 1st row

divide 3rd row by 20
1 0 0
0 -1 0
0 0 1

if this matrix equaled a second matrix we would have performed the identical operations on the second matrix

I hope this is what your instructor wants
Arthur

 

[mmm4444bot]

?

1 0 0
0 -1 0
0 0 1


I hope this is what your instructor wants

Arthur

I could be wrong, of course, but I'm thinking that instructors want students to turn in their own work.

:idea:

By the way, Arthur's result is not correct, if anybody cares.

?