Matrix Review

Subtract

• 3    -8
  0   -1
• 3   -4
  8  -13
• -3   8
  0    1
• 3   -8
  -8    1

What are the dimensions of this matrix?

• 2 x 3
• 3 x 2
• 6 x 1
• 1 x 6

Perform the indicated operation.  If it’s not possible, select Not Possible. 

• 7
  -7
  -6
  20
• 7 
  -9
  -6
  20
• Not Possible
• 7
  -9
  2
  20

find: B*A

• 47     30
  9     5
• 17     15
  42     35
• 10     25
  7     1
• not possible because rows do not match columns

In Matrix R (pictured) what element is in the second row, third column?

• 8
• 9.01
• 6
• 1

You can multiply a 2X3 matrix by which matrix?

• 2X2
• 2X12
• 3X12
• 2X3

Which element is located in A₂₃?

• -3

• 5

• -9

• 2

What is the determinant of this matrix?

• -2

• 2

• 10

• 24

Are these matrices inverses of each other?

• Yes

• No

• Unable to Determine

Find the inverse of the matrix.

• 
• 
• 
• No Inverse Exists