Perform the Indicated Operation $\mathrm { A } = \left[ \begin{array} { r r } - 3 & 1 \\ 0 & 2 \end{array} \right]$

question 140

Multiple Choice

Perform the indicated operation.
-Let $\mathrm { A } = \left[ \begin{array} { r r } - 3 & 1 \\ 0 & 2 \end{array} \right]$ . Find $3 \mathrm {~A}$ .

• A) \(\left[ \begin{array} { r r } - 9 & 3 \\ 0 & 2 \end{array} \right]\)
• B) \(\left[ \begin{array} { l l } 0 & 4 \\ 3 & 5 \end{array} \right]\)
• C) \(\left[ \begin{array} { r r } - 9 & 3 \\ 0 & 6 \end{array} \right]\)
• D) \(\left[ \begin{array} { r r } - 9 & 1 \\ 0 & 2 \end{array} \right]\)

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Definitions:

Just-noticeable Difference

The smallest change in the intensity of a stimulus that can be detected by a sensory system.

Sensory Adaptation

A decrease in sensitivity to a constant level of stimulation.

Absolute Threshold

The smallest amount of physical stimulation required to detect a sensory input half of the time it is present.

Signal Detection

A theory and method for quantifying the ability to differentiate between information-bearing patterns and random patterns that distract from the information.