Simplify Complex Rational Expressions
- $$\begin{array} { r } 12 x + 7 y - 8 z + w = 1 \\5 y + z = - 6 \\x - y - 2 z = - 5 \\3 x - 3 y + 4 z = 5\end{array}$$

question 79

Multiple Choice

Simplify Complex Rational Expressions
- $$\begin{array} { r } 12 x + 7 y - 8 z + w = 1 \\5 y + z = - 6 \\x - y - 2 z = - 5 \\3 x - 3 y + 4 z = 5\end{array}$$

• A)
• \[\left[ \begin{array} { l r r r | r }
• 12 & 7 & - 8 & 1 & 1 \\
• 0 & 5 & 1 & 0 & - 6 \\
• 1 & - 1 & - 2 & 0 & - 5 \\
• 3 & - 3 & 4 & 0 & 5
• \end{array} \right]\]
• B)
• \[\left[ \begin{array} { l r r | r }
• 12 & 7 & - 8 & 1 \\
• 0 & 5 & 1 & 6 \\
• 1 & - 1 & - 2 & - 5 \\
• 3 & - 3 & 4 & 5
• \end{array} \right]\]
• C)
• \[\left[ \begin{array} { l r r | r }
• 12 & 0 & 1 & 9 \\
• 7 & 5 & - 1 & - 3 \\
• - 8 & 1 & - 2 & 4 \\
• 1 & 0 & 0 & 0 \\
• 1 & - 6 & - 5 & 5
• \end{array} \right]\]
• D)
• \[\left[ \begin{array} { l l l l | r }
• 12 & 7 & 8 & 1 & 1 \\
• 0 & 5 & 1 & 0 & - 6 \\
• 1 & 1 & 2 & 0 & - 5 \\
• 3 & 3 & 4 & 0 & 5
• \end{array} \right]\]

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Definitions:

T Wave

Deflection in an electrocardiogram following the QRS complex, representing ventricular repolarization.

Repolarization

The process of restoring the resting negative charge inside a neuron or muscle cell after depolarization.

Action Potentials

The process by which neurons transmit electrical impulses along their axons.

Na+ Channels

Ion channels that allow sodium ions to flow across cell membranes, crucial for the propagation of electrical signals in nerves.