Multiplication Matrix

Which matrix product produces the given system?

• 
• 
• 
• 

Find the product.

• undefined

• -3   16
  17   12
  8   -10

• 3   12 
  -15  -8
  -1   -3

Find the product of the two matrices.

•   2
  6   -8

•   -5
  -5   -11

•     8
  -6   -12

• -3
  5   -2

Find the product of the matrices.

• A

• B

• C

• D

Multiply

• 20     15    -10
  30     -5         0

• -20      15     -10
  30     -5          0

• 1        8       3
  11     4        5

• 20     -15     10
  -30         5        0  

3A=?

• 
• 
• 
• 

find: B*A

• 47     30
  9     5

• 17     15
  42     35

• 10     25
  7     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

Find the product.

• undefined

• -3   16
  17   12
  8   -10

• 3   12 
  -15  -8
  -1   -3

Determine whether each matrix product is defined.  If so, what are the dimensions of the product.
A_2x3  B_2x5

• no

• yes, 2 x 5

• yes , 3 x 5

• yes , 2 x 3