Define the term echelon form and give an example, then reduce the matrix 1 -1 0 - 2 2 -1 Marks) 3 3 -1 - b.) Solve the following system by the Gauss- Jordan elimination method. (8 Marks) i.) x+y+z=5 form A to echelon form. (5 2x + 3y + 5z = 8 4x + 5z = 2 ii.) x + 2y3z = 2 6x + 3y - 92 = 6 7x+14y212 = 13 = c.) What do you understand by the term LU decomposition?. Write the matrix below in the 1 -5 3 2 1 1 0 1 4 LU where A =