The matrix 
is a
As P has equal number of rows and columns and thus it matches with the definition of square matrix.
The given matrix does not satisfy the definition of unit and diagonal matrices.
∴ Option (A) is the only correct answer.
53
The matrix is a
As P has equal number of rows and columns and thus it matches with the definition of square matrix.
The given matrix does not satisfy the definition of unit and diagonal matrices.
∴ Option (A) is the only correct answer.