Identity Matrix
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:
-
Identity matrix plays role as
multiplicative
identity of a square matrix,
-
The
determinant
of an identity matrix is one
See also : diagonal matrix , matrix inverse , matrix multiplication , generalized inverse
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