The Sizes of Two Matrices a and B Are Given $A$

question 39

Multiple Choice

The sizes of two matrices A and B are given. Find the sizes of the product AB and the product BA, if the products are
defined.
- $A$ is $1 \times 4 , B$ is $4 \times 1$ .

• A) \(\mathrm { AB }\) is undefined, BA is \(4 \times 4\).
• B) \(\mathrm { AB }\) is \(4 \times 4\), BA is \(1 \times 1\).
• C) \(\mathrm { AB }\) is \(1 \times 1 , \mathrm { BA }\) is undefined.
• D) \(\mathrm { AB }\) is \(1 \times 1\), \(\mathrm { BA }\) is \(4 \times 4\).

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Definitions:

Bargaining

A process of negotiation between two or more parties each with its own aims, needs, and viewpoints seeking to discover a common ground and reach an agreement to settle a matter of mutual concern or resolve a conflict.

Acceptance

The process or act of receiving or consenting to something or someone, often implying a positive emotional response.

Sexually Transmitted Infection

An infection transmitted through sexual contact, caused by bacteria, viruses, or parasites.

STI

Sexually Transmitted Infection, diseases spread through sexual contact, caused by bacteria, viruses, or parasites.