Matlab Questions.

Question2 1 pts Perform an LU factorization of the matrix below (by hand to make sure you understand how) and enter the results in the appropriate boxes: Enter each element to three decimal places with a zero in front of the decimal point when less than 1 121 131 1.32 u 22 u 23 u 33 Question 10 1 pts Which of the following are indications the solution of a linear system may be vulnerable to round off error O The solution is very sensitive to small changes in even a single element of the coefficient matrix. O The coefficient matrix is not diagonally dominant. O The condition number of the coefficient matrix is much larger than one. O Roundoff error is never a concern if you use Gauss elimination because it is a direct solution method D The solution requires partial pivoting. O The elements of the coefficient matrix span several orders of magnitude. D The system is overdetermined. O The determinant of the coefficient matrix is close to zero