Either the Dimensions of Two Matrices or the Matrices Themselves $A$

question 89

Multiple Choice

Either the dimensions of two matrices or the matrices themselves are given. Find the dimensions of the product AB and
the product BA. If either is not defined, say so.
- $A$ is $2 \times 4$ ; B is $2 \times 4$ .

• A) \(\mathrm { AB }\) is \(4 \times 2\); BA is \(2 \times 4\).
• B) \(\mathrm { AB }\) is \(2 \times 4\); BA is \(4 \times 2\).
• C) \(\mathrm { AB }\) is not defined, \(\mathrm { BA }\) is not defined.
• D) \(\mathrm { AB }\) is \(2 \times 2\); \(\mathrm { BA }\) is \(4 \times 4\).

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Definitions:

Aerobic Exercise

Physical activity that uses large muscle groups, can be maintained continuously, and is rhythmic in nature. It improves the efficiency of the cardiovascular and respiratory systems in delivering oxygen to the body.

Heat-Related Problems

These are health issues caused by exposure to high temperatures and humidity, potentially leading to conditions such as heat stroke, heat exhaustion, and heat cramps.

Head Injury

Any trauma to the scalp, skull, or brain, ranging from mild concussions to severe brain damage.

FITT Principle

A guideline for creating an effective exercise program that emphasizes Frequency, Intensity, Time, and Type of exercise.