Question

when finding basic for row space do we go back to unreduced row?

Answer 1

@amistre64 ,@lalaly

Answer 2

@lalaly

Answer 3

thank you ,

Answer 4

no

Answer 5

Wait, actually that might be wrong. Sorry. I was thinking column space. Row space stays the same.

Answer 6

row space is the rows of the rref that are pivot points

Answer 7

Row space stays the same, column space changes, when you do elimination. So you don't have to go back to unreduced rows to find the basis for the row space.