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

question 27

Multiple Choice

Which one of the following is the variable matrix for the following systems of equations? $\left\{\begin{array}{r}5 x-2 y+6 z=9 \\6 x+2 z=4 \\2 y=3\end{array}\right.$

• A) \(\left[\begin{array}{lll}
• x & y & z \\
• x & y & z \\
• x & y & z
• \end{array}\right]\)
• B) \(\left[\begin{array}{l}
• 9 \\
• 4 \\
• 3
• \end{array}\right]\)
• C) \(\left[\begin{array}{lll}
• x & y & z
• \end{array}\right]\)
• D) \(\left[\begin{array}{ccc}
• 5 x & -2 y & 6 z \\
• 6 x & 0 y & 2 z \\
• 0 x & 2 y & 0 z
• \end{array}\right]\)
• E) \(\left[\begin{array}{l}
• x \\
• y \\
• z
• \end{array}\right]\)

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Definitions:

Third Harmonic

A harmonic that is three times the frequency of the fundamental frequency, often causing distortion in power systems.

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A prolonged conflict (1955-1975) between communist forces in North Vietnam and non-communist forces in South Vietnam, heavily involving the United States and leading to significant casualties and societal disruption.

Modern War

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