2 1 -4 0 1 -4 0 2 ). (*)-() m Using the Gaussian Elimination Method, calculate m such that the matrix is singular. (if the value is a real number, use maximum of two decimal points after the comma, DO NOT round your number, and DO NOT use fractions e.g.: if value is -0.009 then type 0. value is - 5.078 then type -5.07) m = [a]