Row operations will change the values in a matrix either by adding rows or multiplying rows by scalars or permuting . This will change the values in the matrix. Essentially that is the process for Gaussian elimination. This video is focusing on how using those row operations affect the determinant and that explanation depends on elementary row matrices and their relationship to the determinant. Can you help me with a little more information about what you don't understand and maybe I can help a little more or point you to a good video?
Really helpful video! The only thing i dont understand is how did you get the 4•1•1•-1
I still don't get it. I don't understand how or why the row operations affect the matrix.
Row operations will change the values in a matrix either by adding rows or multiplying rows by scalars or permuting . This will change the values in the matrix. Essentially that is the process for Gaussian elimination. This video is focusing on how using those row operations affect the determinant and that explanation depends on elementary row matrices and their relationship to the determinant. Can you help me with a little more information about what you don't understand and maybe I can help a little more or point you to a good video?