Which One of the Following Is the Constant Matrix for the Following

question 38

Multiple Choice

Which one of the following is the constant matrix for the following systems of equations? $\left\{\begin{array}{r}4 x-9 y+3 z=8 \\4 x+2 z=3 \\7 y=7\end{array}\right.$

• A) \(\left[\begin{array}{ccc} 4 & -9 & 3 \\ 4 & 0 & 2 \\ 0 & 7 & 0 \end{array}\right]\)
• B) \(\left[\begin{array}{lll} 8 & 3 & 7 \end{array}\right]\)
• C) \(\left[\begin{array}{l} 8 \\ 3 \\ 7 \end{array}\right]\)
• D) \(\left[\begin{array}{l} x \\ y \\ z \end{array}\right]\)

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Definitions:

Working Memory

refers to the part of short-term memory that is concerned with immediate, conscious perceptual and linguistic processing.

Baddeley and Hitch

Psychologists who proposed the model of working memory, describing it as consisting of multiple components including the central executive, phonological loop, and visuospatial sketchpad.

Working Memory

A cognitive system responsible for temporarily holding and manipulating information needed for complex tasks such as learning, reasoning, and comprehension.

Sensory Recorder

A hypothetical or metaphoric device that captures and stores sensory experiences exactly as they are perceived.