The Sizes of Two Matrices Are Given $1 \times 4$ ; B Is

question 268

Multiple Choice

The sizes of two matrices are given. Find the size of the product AB and the size of the product BA, if the given product
can be calculated.
-A is $1 \times 4$ ; B is $1 \times 4$ .

• A) \(\mathrm { AB }\) is \(4 \times 1\); BA is \(1 \times 4\).
• B) \(\mathrm { AB }\) is \(1 \times 1\); BA is \(4 \times 4\).
• C) \(\mathrm { AB }\) cannot be calculated; \(\mathrm { BA }\) cannot be calculated.
• D) \(\mathrm { AB }\) is \(1 \times 4\); BA is \(4 \times 1\).

---

Definitions:

Appraisal-focused

Refers to coping strategies that involve changing the way one thinks about a stressor or challenge.

Emotion-focused

Emotion-focused strategies involve managing and coping with feelings directly, aiming to reduce the emotional distress associated with different situations.

Cognition-focused

Pertaining to strategies or interventions that target the processes of thinking, understanding, and decision-making.

Constructive Coping

A strategy that involves dealing with stressful situations in an effective and healthy way, focusing on problem-solving and emotional management.