(3)
2.5
Solve the equation Ax = b by using the LU factorization given for A. 1 2. 2 0 1 0 0 0 1 2 20 15 -2 -2 - 4 12 A= -2 1 0 0 0 2 012 - 16 b= 3 0 4 -36 3 -3 1 0 0 0 - 2 0 -1 -4 -2 -6 37 -4 3 - 1 1 0 0 0 1