Commonly symbolized as 'I', the Identity Matrix is a square matrix characterized by ones on its diagonal and zeros in all other positions. It's referred to as the 'identity' due to the fact that when any matrix is multiplied by it, the original matrix's value is preserved, akin to the act of multiplying numbers by one. This concept is an indispensable part of linear algebra, particularly when dealing with the computations involving the inverse of matrices.
| Topic | Problem | Solution |
|---|---|---|
| None | Find the identity matrix for the 2x2 matrix A = \… | First, let's write down the 2x2 identity matrix I = \[\begin{pmatrix} 1 & 0 \\ 0 & 1 \end{pmatrix}\] |