Identity matrix: The identity matrix is always

The identity matrix is always a square matrix While we say “the identity matrix ”, we are often talking about “an” identity matrix . For any whole number \ (n\), there is a corresponding \ (n \times n\) identity matrix . These matrices are said to be square since there is always the same number of rows and columns. Identity Matrix is the matrix which is n × n square matrix where the diagonal consist of ones and the other elements are all zeros. It is also called as a Unit Matrix or Elementary matrix . An identity matrix is a square matrix in which all the elements along the main diagonal are 1, and all other elements are 0. It is often denoted by I or In (where n is the matrix order). You’ll find this concept applied in areas such as matrix multiplication, matrix inversion, and solving equations using matrices in maths and computer science. Learn what an identity matrix is and about its role in matrix multiplication.