Basic Matrix Operation

What is the value of element a₂₃?

• 2

• -1

• 6

• 1

Find B-A

• -3 1

  7 -1

• 1 0

  1 -4

• 4 0

  -6 1

• not possible because rows do not match columns

How many columns are in a 5 x 4 matrix?

• 5

• 4

• 20

• 9

• 
• 
• 
• 

Find B-2A

​ (a)   ​ (b)  

​ (c)   ​ (d)  

​

• 2

• -5

• -13

• 1

• 4

• -1

• 0

• -6

• -10

• -4

Find 2A-3B

• -3 1

  7 -1

• 1 0

  1 -4

• -4 0

  6 -1

• -14 -5

  11 -3

Find A + B

• 
• 
• 
• 

Complete Question #1 from the "Matrices Quizizz 1" Handout.

• 
• 
• 
• 

Given these matrices find D - A

• 
• 
• 
• NA

Find Z - W

• 
• 
• 
• Does Not Exist