Matrix Operations Test

What are the dimensions of this matrix?

• 2 x 3
• 3 x 2
• 6 x 1
• 1 x 6

How many columns are in a 5 x 4 matrix?

• 5
• 4
• 20
• 9

Element G₂₂ is

• 1

• 2

• 3

• 4

Find B-A

• -3     1
  7     -1
• 1     0
  1     -4
• 4       0
  -6     1

• not possible because rows do not match columns

What do m, n, p and q equal in this scalar matrix multiplication?

• m=8, n=9, p=-4, q=4 
• m=15, n = -45, p=20, q=-5
• m=20, n=-5, p=15, q=-45
• m=-5, n=20, p=-45, q=15

Perform the indicated operation

• 
• 
• 
• 
• not possible

You can multiply a 2X3 matrix by which matrix?

• 2X2
• 2X12
• 3X12
• 2X3

When a 3x6 matrix is multiplied by a 6x5 matrix, what will the dimensions of the product be?

• 6x6
• 3x6
• 3x5
• 5x6

Find the product.

• Not possible.

• -3 16

  17 12

  8 -10

• 3 12

  -15 -8

  -1 -3

Find the product.

• 
• 
• 
• No Product Exists