Use the Given Row Transformation to Change the Matrix as Indicated

question 497

Multiple Choice

Use the given row transformation to change the matrix as indicated.
- $\left[ \begin{array} { r r } - 1 & 4 \\ 7 & 0 \end{array} \right] ; 7$ times row 1 added to row 2

• A)
• \(\left[ \begin{array} { r r } - 1 & 4 \\ 0 & 28 \end{array} \right]\)
• B)
• \(\left[ \begin{array} { r r } - 1 & - 3 \\ 0 & 28 \end{array} \right]\)
• C)
• \(\left[ \begin{array} { r r } - 7 & 28 \\ 7 & 0 \end{array} \right]\)
• D)
• \(\left[ \begin{array} { r r } - 1 & 4 \\ 7 & 28 \end{array} \right]\)

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Definitions:

Defence Mechanisms

Psychological strategies brought into play by individuals, groups, and even nations to cope with realities and to maintain self-image.

Sublimation

A defense mechanism in psychoanalytic theory where socially unacceptable impulses are transformed into socially acceptable actions or behaviors.

Repression

A psychological defense mechanism where distressing thoughts and feelings are unconsciously blocked from conscious awareness.

Defence Mechanism

Unconscious maneuvers used to defend a person against the discomfort brought on by objectionable feelings or notions.