Matrices Dimensions

You can multiply a 2X3 matrix by which matrix?

• 2X2

• 2X12

• 3X12

• 2X3

You can multiply a 7X3 matrix by which matrix?

• 2X2

• 7X12

• 3X5

• 7X7

You can multiply a 1X4 matrix by which matrix?

• 1X1

• 4X3

• 1X4

• 8X8

What are the dimensions of this matrix?

• 2 x 3

• 3 x 2

• 6 x 1

• 1 x 6

• A

• B

• C

• D

find: B*A

• 47     30
  9     5

• 17     15
  42     35

• 10     25
  7     1

• not possible because rows do not match columns

• A
• B
• C
• D

• 
• 
• 
• 

• 17   12
  25   18
• 8   9
  12   6
• 6   6
  7   5
• 12   10
  10   12

Find the product of the two matrices.

• undefined

• -3   16
  17   12
  8   -10

• 3   12 
  -15  -8
  -1   -3