Types Of Matrices

Let us examine the given matrix: 1. It is a 3 × 3 matrix, i.e., same number of rows and columns. So, it's a square matrix.
2. Skew-symmetric matrix requires that and all diagonal elements must be zero. But here, the entry is 3 , so it is not skew-symmetric.
3. Scalar matrix requires all diagonal elements to be equal and all off-diagonal elements to be zero. Clearly, this is not the case here.
4. Diagonal matrix has non-zero elements only on the main diagonal. But here, and which are non-diagonal positions. So it's not a diagonal matrix.
Thus, the only correct classification is that it's a square matrix.