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

question 3

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 $2 \times 1$ , B is $1 \times 1$ .

• A) \(\mathrm { AB }\) is \(2 \times 1 , \mathrm { BA }\) is undefined.
• B) \(\mathrm { AB }\) is \(1 \times 2 , \mathrm { BA }\) is \(1 \times 1\).
• C) \(\mathrm { AB }\) is \(2 \times 2 , \mathrm { BA }\) is \(1 \times 1\).
• D) \(A B\) is undefined, \(B A\) is \(1 \times 2\).

---

Definitions:

Quarter Income Statement

A financial report that summarizes the revenues, expenses, and profits or losses of a company over a three-month period.

Impairment Test

An examination to determine if an asset's carrying value exceeds its recoverable amount, indicating if the asset is impaired.

Future Cash Flows

Estimates of the amount of money expected to be received or paid out over future periods.

Asset

Resources owned or controlled by a business, expected to provide future economic benefits.