Matrices

Element A₂₂ is

• 1

• 2

• 4

• 0

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  

Add

• 
• 
• 
• 

a₂₃ + a₁₂ - a₃₁ + a₄₃?

• -2

• -1

• -3

• 0

Find Z - W

• 
• 
• 
• Does Not Exist

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

• undefined

• ( 2 x 4 )

• ( 2 x 2 )

• ( 4 x 2 )

If the order of matrix A is m×p and the order of matrix B is p×n. Then the order of matrix AB is

• m × n

• n × m

• n × p

• m × p

Find B-A

• 
• 
• 
• 

Evaluate the determinant of the matrix

• -21

• 0

• 9

• 12

• 7

• 1

• - 7

• None of these