Q49 of 98 Page 314

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

Let X = A+A’

X’ = (A+A’)’

= A’ + (A’)’

=A + A’

= X

Therefore (A+A’) is symmetric matrix.

If A is an invertible square matrix and k is a non-negative real number then (KA)^-1=?

If A=then A^-1=?

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 is a square matrix then (A + A’) is