Identity Command

Identity[Number n]

Returns the identity matrix with the given order (n\times n).

Example: Identity[3] gives you the matrix \begin{pmatrix}1&0&0\\0&1&0\\0&0&1\end{pmatrix}.

Note: If A is a square matrix of order n, A^0 produces the same matrix as Identity[n].

Note: This command is not dynamic. ie Identity[a] will not change when a is changed

CAS Syntax

Identity[Number]

Returns the identity matrix with the given order.