Question 9. Find an
LUdecomposition for the given matrix
Awhere
Lis a lower-triangular matrix with 1 's on the diagonal. You must show your steps for credit.
A=[[1,-1,0,1],[2,0,3,2],[-1,1,1,-1],[0,6,11,3]]Question 10. Use your
LUdecomposition from the previous problem to solve
Ax=b, where
b=[[0],[-2],[0],[-12]]9 and 10 plz