If `A=[a_(ij)]` is a scalar matrix, then trace of A is

If A=[a_(ij)] is a scalar matrix of order n xx n such that a_(ii)=k for all i, then trace of A is equal to nk(b)n+k(c)(n)/(k) (d) none of these

If A=[a_(ij)]_(3xx3) is a scalar matrix such that a_(ij)=5" for all "i=j," then: "|A|=

If A=[a_(ij)] is a skew-symmetric matrix,then write the value of sum_(i)sum_(j)a_(ij)

If A=[a_(ij)] is a skew-symmetric matrix,then write the value of sum_(i)a_(ij).

If A=[a_(ij)] is a square matrix of even order such that a_(ij)=i^(2)-j^(2), then

If A=[a_(ij)] is a square matrix of even order such that a_(ij)=i^(2)-j^(2), then A is a skew- symmetric matrix and |A|=0 (b) A is symmetric matrix and |A| is a square (c) A is symmetric matrix and |A|=0 (d) none of these

If A=[a_(ij)] is a square matrix such that a_(ij)=i^(2)-j^(2), then write whether A is symmetric or skew-symmetric.

A = [a_(ij)]_(mxx n) is a square matrix , if