Let `psi_A` be defined as trace of a matrix which is sum of diagonal elements of a square matrix.`psi_(lambdaA+mu B`=

Let psi_A be defined as trace of a matrix A which is sum of diagonal elements of a square matrix. psi_(lambdaA+mu B) =

Let psi_A be defined as trace of a matrix A which is sum of diagonal elements of a square matrix. Which of the following is true?

Define trace of a matrix.

Define Trace of a matrix.

Give an example of a matrix which is a diagonal matrix which is not a scalar matrix.

The sum of the principal diagonal elements of a square matrix is called

The sum of the principal diagonal elements of a square matrix is called

Define a diagonal matrix.

Define a diagonal matrix.

Define a diagonal matrix.