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<div style="font-size:30px">'''IDENTITY'''</div><br/>
<div style="font-size:30px">'''MATRIX("IDENTITY",order)'''</div><br/>
*<math>order</math> is the order of the Identity matrix.
==Description==
*This function gives the identity matrix of order 3.
*The matrix is called identity matrix if a square matrix which has a 1 for each element on the main diagonal and 0 for all other elements.
*Identity matrix is denoted by I_n or simply by I.
*Identity matrix is also called as Unit matrix.
*The identity matrix is the identity for matrix multiplication.
*The form of identity matrices are:<math> I_1=\begin{bmatrix}
1 \\
\end{bmatrix}</math>
<math>I_2=\begin{bmatrix}
1 & 0 \\
0 & 1 \\
\end{bmatrix}</math>
<math>I_3=\begin{bmatrix}
1 & 0 & 0 \\
0 & 1 & 0\\
0 & 0 & 1
\end{bmatrix}</math>
.......
<math>I_n=\begin{bmatrix}
1 & 0 & 0 & \cdots & 0 \\
0 & 1 & 0 & \cdots & 0 \\
0 & 0 & 1 & \cdots & 0 \\
\vdots & \ddots & \vdots \\
0 & 0 & 0 & \cdots & 1
\end{bmatrix}</math>