Find the Inverse of the Matrix $\left[ \begin{array} { c c } 6 & 12 \\ - 18 & - 30 \end{array} \right]$

question 76

Multiple Choice

Find the inverse of the matrix $\left[ \begin{array} { c c } 6 & 12 \\ - 18 & - 30 \end{array} \right]$ .

• A) \(\frac { 1 } { 7 } \left[ \begin{array} { c c } 6 & 12 \\ - 18 & - 30 \end{array} \right]\)
• B) \(\frac { 1 } { 6 } \left[ \begin{array} { c c } - 5 & - 2 \\ 3 & 1 \end{array} \right]\)
• C) \(\left[ \begin{array} { c c } - 6 & - 12 \\ 30 & 18 \end{array} \right]\)
• D) \(\left[ \begin{array} { c c } 6 & - 18 \\ 24 & - 42 \end{array} \right]\)
• E) \(\frac { 1 } { 13 } \left[ \begin{array} { c c } - 6 & - 12 \\ - 18 & 30 \end{array} \right]\)

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Definitions:

Favourable Prognosis

A medical judgement indicating that the expected course and outcome of a patient's condition is optimistic or beneficial, suggesting a good chance of recovery or stability.

Onset

The beginning or start of something, particularly referring to diseases or phenomena.

Expressed Emotion

A measure of the family environment that is based on how much criticism, hostility, and emotional over-involvement are shown towards a family member with a psychiatric disorder.

Negative Symptoms

Features often associated with schizophrenia, including lack of motivation, reduction in spontaneous speech, and diminished emotional expression.