Is there a command that explicitly gives me the vectors for the image given a matrix M? If not, lets suppose I have the matrix in row echelon, N. So I create an empty list. Basically, I want to say while i< # of rows, if row i of row echelon form matrix N has a 1, put M[i] in list. But I don't know how to say if a row has a 1( a pivot).
P.s., yes I need the rows. My matrix is like transposed.
