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anonymous
 4 years ago
when working with matrices, and performing row operations, how to i determine which equations to keep the same
anonymous
 4 years ago
when working with matrices, and performing row operations, how to i determine which equations to keep the same

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amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1it depends on what your trying to accomlish

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1you usually want to get it into the form of an identity matris 100 010 001

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0like if i am trying to get into roecelon form. Sometimes in my book they say add 2*row three to row 2, producing a new row 2

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0but why is it that we dont also get a new row 3

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1row echelon is just zeroing out the under on the pivots right?

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1the idea is to modify one row thru addition by using a useful form of the pivoting row; the pivoting row is already set so it doesnt need changed does it? in this case that would have been row 2

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so in the case i mentioned above the row 2 is not changed because its the pivoting row, meaning we are adding it to row 3

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0thus producing a new row three, but keeping the original row 2

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1correct; changing row 2 at some later point is fiine; but for your problem its not needed to change
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