## Matrix One

In some application such as
regression
, we need to
concatenate
the data matrix with vector one. A general form of vector one is
*
matrix one
*
, that is a matrix whose entries are all ones.

Matrix one is fully determined by its size .

**
Example:
**

This simple interactive program below will produce matrix one at different sizes. This program is designed to confirm your basic understanding about matrix one.

**
See Also
**
:
Matrix Zero
,
Matrix Identity

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