Metrix properties

1.	Metrix properties
Answer» In a square matrix, the number of rows and columns are equal. A square matrix is a diagonal matrix in which non-diagonal elements are zeroes. A square matrix is a scalar matrix in which the non-diagonal elements are zeroes, and diagonal elements are the same. A matrix in which all non-diagonal elements are zeroes and diagonal elements are 1s is said to be an identity matrix. A matrix is a symmetric matrix if A=A^T A matrix is skew-symmetric if A=–A^T A matrix is an orthogonal matrix; if A×A^T=I A matrix is said to be a singular matrix, if \|A\|=0 A matrix is said to be idempotent, if A²=A. A matrix is said to be involutory, if A²=I

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