Solving in Matrices

What is a₂₃

• 14

• 4

• 1

• 3

BA=

• Undefined

• 
• 
• 

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.

What would be the dimension of the matrix product AB? If A_1X4 and B_4X7

• 1X7

• 4X4

• 4X7

• 7X1

Find the inverse of the matrix.

• 
• 
• 
• No Inverse Exists

• n = p

• n = p, m =q

• m = n = p = q

• m = q

• 0

• I₂

• -I₂

• none of these

• unit matrix

• null matrix

• symmetric matrix

• skew symmetric matrix

• 1/3

• 3

• 5

• 1

• 1

• 1/2

• none of these