Define a row matrix.

Define a unit matrix.

define a scalar matrix.

Define a scalar matrix.

Define a column matrix.

Define a singular matrix.

Define a diagonal matrix.

Define a diagonal matrix.

Define a symmetric matrix.

Let a be a 2xx2 matrix with non-zero entries and let A^(2)=I , where I is a 2xx2 identity matrix. Define Tr(A)= sum of diagonal elements of A and |A| = determinant of matrix A. Statement 1 : Tr (A) = 0 Statement 2 : |A|=1

If the matrix A B is a zero matrix, then