Ok so I know that the following matrix has a determinant of zero, which means it has no inverse matrix because I found out that it has a row of zeros... But, just by looking at it, how can I tell its determinant is zero?
Ok so I know that the following matrix has a determinant of zero, which means it has no inverse matrix because I found out that it has a row of zeros... But, just by looking at it, how can I tell its determinant is zero?