If all the diagonal elements in a diagonal matrix is 0, then it is a ________ matrix.

Define a diagonal matrix.

Define a diagonal matrix.

Define a diagonal matrix.

Square matrix and diagonal matrix

The inverse of a diagonal matrix is a:

The no-diagonal elements is any unit matrix are ___.

Each diagonal element of a skew symmetric matrix is

The diagonal elements of a skew-symmetric matrix are:

Assertion (A) [(7,0,0),(0,7,0),(0,0,7)] is a scalar matrix Reason (R) : if all the elements of the principal diagonal are equal, it is called a scalar matrix