The Matrix Is in Reduced Echelon Form

question 36

True/False

The matrix is in reduced echelon form. $$\left. \left[ \begin{array} { c c c c } 1 & 0 & 0 & 0 \\0 & 0 & 1 & 0 \\0 & 1 & 0 & 0 \\0 & 0 & 0 & 1\end{array} \right] \quad \begin{array} { r } 1 \\- 7 \\1\\-8\end{array} \right]$$

---

Definitions:

Email Address

A unique identifier for sending and receiving digital mail over the internet, typically consisting of a user name and domain name.

Keywords

Specific words or phrases that summarize the main ideas or topics of a document, often used for indexing, searching, or SEO.

Modify A Search

The act of changing the criteria or parameters of a search query to refine results or better meet the user's needs.

Contact List

a collection of information, such as names, phone numbers, and addresses, stored and organized for ease of communication.