The Sizes of Two Matrices Are Given $\mathrm { A }$

question 275

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.
- $\mathrm { A }$ is $2 \times 1 ; \mathrm { B }$ is $1 \times 1$ .

• A) \(\mathrm { AB }\) is \(1 \times 2 ; \mathrm { BA }\) is \(1 \times 1\).
• B) AB cannot be calculated; \(B A\) is \(1 \times 2\).
• C) \(\mathrm { AB }\) is \(2 \times 1\); BA cannot be calculated.
• D) \(\mathrm { AB }\) is \(2 \times 2 ; \mathrm { BA }\) is \(1 \times 1\).

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Definitions:

Gender Identity

An individual's personal sense of their own gender, which may or may not correspond with their sex assigned at birth.

Male

A sex that typically produces small, mobile gametes, such as sperm, characteristic of males in species that have sexual reproduction.

Pleasure Principle

A psychoanalytic concept where behavior is driven by the desire to seek pleasure and avoid pain, primarily associated with the id aspect of personality.

Repression

A defense mechanism where unwanted thoughts or desires are unconsciously pushed out of conscious awareness.