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 \(4 \times 1\).

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Definitions:

Scientific Method

A systematic approach to research and experimentation characterized by observation, hypothesis formulation, experimentation, and conclusions.

Observing Some Phenomenon

The act of carefully watching, tracking, or analyzing an occurrence, event, or thing to gather data and draw conclusions.

Scientific Method

A systematic and logical approach to discovering how things in the universe work, involving observation, hypothesis formulation, experimentation, and conclusion.

Case Studies

In-depth analyses of a single event, situation, or individual to explore and understand underlying principles or phenomena.