If A=and B= and

(A + B)² = (A² + B²) then

49

If A is a square matrix then (A + A^’) is

50

If A is a square matrix then (A-A^’) is

51

If A is a 3-rowed square matrix and │3A│=k │A│ then k =?

52

Which one of the following is a scalar matrix?