Question 9. Find an
LU
decomposition for the given matrix
A
where
L
is 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
LU
decomposition from the previous problem to solve
Ax=b
, where
b=[[0],[-2],[0],[-12]]
9 and 10 plz