Matrix Operations

What is the dimension (order) of the matrix shown?

• ( 2 x 2 )

• ( 1 x 2 )

• ( 2 x 1 )

• ( 2 x 4 )

Perform the operation if possible.

• A

• B

• C

• D

Perform the operation if possible.

• A

• B

• C

• D

What is the entry at r₃₁?

• 3

• 1

• 4

• 7

Find the product of the two matrices.

• 1   2
  6   -8
• -3   -5
  -5   -11
• -2     8
  -6   -12
• 2  -3
  5   -2

What is the dimension (order) of the matrix shown?

• ( 2 x 2 )

• ( 1 x 2 )

• ( 2 x 1 )

• ( 2 x 4 )

What are the dimensions of matrix B?

• 2 x 3

• 3 x 2

• -8 x 10

• 3 x 3

What is the value of the variable in the equation?

• 
• 
• 
• 

Subtract

• 3    -8
  0   -1
• 3   -4
  8  -13
• -3   8
  0    1
• 3   -8
  -8    1

What is the value of element a₂₃?

• 2
• -1
• 6
• 1