By Kardi Teknomo, PhD.
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Identity matrix is a square matrix whose diagonal elements are equal to one. Non-diagonal elements are zeros.
Identity matrix is fully determined by its order.
**Example:**
The interactive program below will generate identity matrix based on your specified size or order. This program is designed to confirm your basic understanding about identity matrix.
## Properties
The following are well known properties of identity matrix:
**See also**: diagonal matrix, matrix inverse, matrix multiplication, generalized inverse
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**Preferable reference for this tutorial is**
Teknomo, Kardi (2011) Linear Algebra tutorial. http:\\people.revoledu.com\kardi\
tutorial\LinearAlgebra\ |