Multiplying Matrices and Finding Determinants

Which of the following is NOT defined for matrix multiplication A X B?

• 
• 
• 
• 

What is the value of a₂₃ from the given matrix?

• no entry a₂₃

• -42

• 6

• 33

What would be the dimensions (output) of AB?

• undefined

• 2 X 2

• 3 X 2

• 3 X 3

What is the determinant of matrix A?

• 0

• -16

• 16

• undefined

Find the determinant of the given matrix?

• 5

• -5

• 0

• -75

Find the inverse of the matrix, if it exists.

• singular, no inverse

• 
• 
• 

Which of the following are NOT inverse matrices of each other?

• 
• 
• 
•