Adding and subtracting matrices

Find B-A

• -3     1
  7     -1
• 1     0
  1     -4
• 4       0
  -6     1
• not possible because rows do not match columns

Can we add a [3x2] matrix + a [2x3] matrix?

• Yes

• No

Find X - V

• 
• 
• 
• Does Not Exist

What is the condition of adding and subtracting 2 matrices?

• Two matrices can be added and substracted even they have different size.

• Two matrices can be added and subtracted if they have the same size.

• undefined

• 
• 
• 

The matrix A - B is

• 
• 
• 
• 

• A

• B

• C

• D

• A

• B

• C

• D

Pay attention to the key!

• 23

• -23

• 7

• -7

A 2 by 4 matrix can be added to a 4 by 2 matrix

• true

• false