Please show your full solution

1 6 ((1) Test your formula. by using it to compute the determinant of the same matrix: 2 l 4 . 1 1 (e) Is there a reason why we would prefer to expand along a certain row or column of a matrix over another row or column? 1 2 3 4 . _ . U 2 4 6 Problem 2 Flnd the detelminant of 0 U 3 6 U U U 2 Class Discussion: The determinant of a \"triangular matrix\" is