Solve the Problem $A = \left[ \begin{array} { r r r } 1 & - 3 & 2 \\ - 2 & 5 & - 1 \\ 3 & - 4 & 5 \end{array} \right]$

question 35

Multiple Choice

Solve the problem.
-Let $A = \left[ \begin{array} { r r r } 1 & - 3 & 2 \\ - 2 & 5 & - 1 \\ 3 & - 4 & 5 \end{array} \right]$ and $\mathbf { b } = \left[ \begin{array} { l } b _ { 1 } \\ b _ { 2 } \\ b _ { 3 } \end{array} \right]$ .
Determine if the equation $\mathrm { Ax } = \mathrm { b }$ is consistent for all possible $\mathrm { b } _ { 1 } , \mathrm {~b} _ { 2 } , \mathrm {~b} _ { 3 }$ . If the equation is not consistent for all possible $b _ { 1 } , b _ { 2 } , b _ { 3 }$ , give a description of the set of all $\mathbf { b }$ for which the equation is consistent (i.e., a condition which must be satisfied by $b _ { 1 } , b _ { 2 } , b _ { 3 }$ ) .

• A) Equation is consistent for all \(b _ { 1 } , b _ { 2 } , b _ { 3 }\) satisfying \(- 3 b _ { 1 } + b _ { 3 } = 0\).
• B) Equation is consistent for all \(b _ { 1 } , b _ { 2 } , b _ { 3 }\) satisfying \(2 b _ { 1 } + b _ { 2 } = 0\).
• C) Equation is consistent for all possible \(b _ { 1 } , b _ { 2 } , b _ { 3 }\).
• D) Equation is consistent for all \(b _ { 1 } , b _ { 2 }\), \(b _ { 3 }\) satisfying \(7 b _ { 1 } + 5 b _ { 2 } + b _ { 3 } = 0\).

---

Definitions:

Specificity

The ability of a test or biological mechanism to accurately identify a particular substance or pathogen without cross-reacting with other substances.

Synapses

The junctions between neurons through which nerve impulses pass by diffusion of neurotransmitters across a gap.

Hyperpolarization

A change in a cell's membrane potential that makes it more negative, moving further from zero.

Inhibitory Postsynaptic Potential

Hyperpolarization in the postsynaptic membrane, which causes the membrane potential to move away from threshold.