Determinants and Matrices

What is the formula for the determinant of a 2x2 matrix?

• ad-bc

• ab-cd

• ad+bc

• (a+d)(b+c)

What is the determinant of this matrix?

• -2

• 2

• 10

• 24

What is the determinant of this matrix?

• 5

• -5

• 0

• -12

• 2

• 6

• 0

• -2

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

• ⌈1  0⌉
  ⌊2  3⌋

• ⌈-4  -2⌉
  ⌊6   3⌋

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

• 198

• 162

• -333

• -9

• 2

• 6

• 0

• -2

Let A be square matrix of order 3 X 3. Write the value of|2𝐴|, where |𝐴| = 4

• 8

• 16

• 24

• 32

What is the determinant of this matrix?

• 0

• 24

• -24

• -12

Will this matrix have an inverse?

• Yes

• No

• Unable to Determine