Respuesta :
it is a square diagonal matrix with all its main diagonal entries.
Im not sure what a Scalar Matrix is Iv e never come across that term. Scalar multiplication is the multiplication of a matrix by a scalar, as below
the scalar is in this case 2:-
2 ( 1 3)
( 0 1)
the scalar is in this case 2:-
2 ( 1 3)
( 0 1)