Q52 of 98 Page 314

Which one of the following is a scalar matrix?

= -8

Since -8 could be taken common from each row or column. Hence C is a scalar matrix.

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

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

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

If A=and B= and

(A + B)² = (A² + B²) then