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A square m atrix where every element is ...

A square m atrix where every element is unity is called an identity matrix.

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To solve the question, we need to clarify the definitions of an identity matrix and a square matrix where every element is unity. ### Step-by-Step Solution: 1. **Understanding the Definitions**: - A **square matrix** is a matrix that has the same number of rows and columns. - A **unity matrix** (or all-ones matrix) is a square matrix where every element is equal to 1. - An **identity matrix** is a special type of square matrix where all the elements of the principal diagonal (from the top left to the bottom right) are 1, and all other elements are 0. ...
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