anonymous
  • anonymous
how would you solve a matrix if there is a zero underneath the pivot position?
Mathematics
  • Stacey Warren - Expert brainly.com
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chestercat
  • chestercat
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UsukiDoll
  • UsukiDoll
can you give an example? I know there are row operations 1. you can swap rows 2. you can multiply a row by a number 3. you can add 2 rows to create a new row that will replace the one of the old rows.
UsukiDoll
  • UsukiDoll
that's just REF - row echelon form... if you want RREF (reduce row echelon form) you must have 0's above and below the 1 [similar to an identity matrix]
anonymous
  • anonymous
k example: row 1: 1 5 7 9 row 2: 0 4 1 7 row 3: 2 -2 11 -3

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anonymous
  • anonymous
nvm got it but thanks
UsukiDoll
  • UsukiDoll
|dw:1434517367302:dw| that 0 isn't doing anything wrong... as long as you don't have a 0 in the main diagonal...which breaks one of the rules... you must have a 1 on the top left corner
UsukiDoll
  • UsukiDoll
and then the 1 is shifted down and to the right.. your main diagonal is 1 4 11.
UsukiDoll
  • UsukiDoll
|dw:1434517479026:dw| you just need to do some row operations to have every digit below the main diagonal 0.

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