Matrices Review

What are the dimensions of this matrix?

• 4x3

• 3x4

• 3

• 4

Add

• 11    8
  -4     2
• 3     2
  -6    -6
• -3    2
  -4    -6
• 10    8
  -6    2

What must be true in order to ADD two matrices?

• They must be square.
• The dimensions must be equal.
• The determinant can't equal 0.
• The column of the 1st must equal the row of the 2nd.

Perform the indicated operation

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• 
• 
• 
• not possible

Perform the indicated operation

• 
• 
• 
• 
• not possible

You can multiply a 2X3 matrix by which matrix?

• 2X2
• 2X12
• 3X12
• 2X3

These matrices are being multiplied. Determine the dimension/size of the new matrix. 

• Can't multiply them
• 4  x  2
• 3  x  3
• 4  x  3

Find the product of the matrices.

• A
• B
• C
• D

Perform scalar multiplication on the matrix

• A
• B
• C
• D

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• 
• 
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