0B2 Wk6 Tutorial MCQs (Determinants)

What is the determinant of A?

• -44

• -36

• 28

• 44

Which of the formulae in the picture is the formula for calculating the determinant of a 3x3 matrix?

• a

• b

• c

• d

• a) Another name for the (i,j)-th entry of A.

• b) The matrix obtained by deleting the i-th row and j-th column of A.

• c) The matrix obtained by deleting the j-th row and i-th column of A.

• d) The determinant of the matrix obtained by deleting the i-th row and j-th column of A.

What is the determinant of A?

• 0

• 12

• 18

• -12

• -18