Matrix and Determinants

Evaluate the determinant of the matrix.

• -21

• 0

• 9

• 12

Evaluate the determinant of the matrix.

• -21

• 0

• 9

• 12

Determine whether the matrices are multiplicative inverses.

• Yes

• No

• Elevator

• Pi

Determine whether the matrices are multiplicative inverses.

• Yes

• No

• Workout

• Valut-Tech

Solve for the determinant of the following matrix:  
⌈12  −3⌉
⌊−6  15⌋
*detA= ad-bc

• 198

• 162

• -333

• -9

If A is a 3 x 3 matrix such that det (A) = 8, then det (3A) equals ________.

• 8

• 24

• 72

• 216

• 2

• 6

• 0

• -2

Which of the following has a determinant of 0?
*det= ad-bc

• ⌈1  0⌉
  ⌊2  3⌋

• ⌈-4  -2⌉
  ⌊6   3⌋

• 2

• 6

• 0

• -2

If A is square matrix of order 3 such that |AdjA| =64 , find |A|

• 64

• 8

• 4

• 192