Matrices Review Dimensions and Addition

If the matrices can be multiplied, what dimension is the product? If not, write undefined.

Youtube Mattdoesmath

Video: Multiplying Matrices: What are the Dimensions of the Product Matrix

• ( 2 x 2 )

• ( 6 x 2)

• ( 2 x 6 ) )

• ( 3 x 2 )

If the matrices can be multiplied, what dimension is the product? If not, write undefined.

Youtube Mattdoesmath

Video: Multiplying Matrices: What are the Dimensions of the Product Matrix

• undefined

• ( 3 x 1 )

• ( 1 x 2 )

• ( 3 x 2 )

If the matrices can be multiplied, what dimension is the product? If not, write undefined.

Youtube Mattdoesmath

Video: Multiplying Matrices: What are the Dimensions of the Product Matrix

• ( 3 x 1 )

• ( 3 x 2 )

• ( 3 x 3 )

• undefined

If the matrices can be multiplied, what dimension is the product? If not, write undefined.

Youtube Mattdoesmath

Video: Multiplying Matrices: What are the Dimensions of the Product Matrix

• undefined

• ( 2 x 4 )

• ( 2 x 2 )

• ( 4 x 2 )

Find the sum of both matrices.

• 
• 
• 
• 

Perform the indicated operation

• 
• 
• 
• 
• not possible

Dimensions?

• a

• b

• c

• d

To add or subtract matrices, the ​number of ​ (a)   ​ and ​ (b)   ​ of each matrix must be ​ (c)  

• rows

• columns

• equal.

• a
• b
• c
• d

Dimensions?

• a

• b

• c

• d