Find the Inverse, If It Exists, for the Matrix $\left[ \begin{array} { l l l } 1 & 1 & 1 \\ 2 & 1 & 1 \\ 2 & 2 & 3 \end{array} \right]$

question 237

Multiple Choice

Find the inverse, if it exists, for the matrix.
- $\left[ \begin{array} { l l l } 1 & 1 & 1 \\ 2 & 1 & 1 \\ 2 & 2 & 3 \end{array} \right]$

• A) The inverse does not exist.
• B) \[\left[ \begin{array} { r r r }
• - 1 & 1 & 0 \\
• 4 & - 1 & - 1 \\
• - 2 & 0 & 1
• \end{array} \right]\]
• C)
• \[\left[ \begin{array} { l l l }
• - 1 & - 1 & - 1 \\
• - 2 & - 1 & - 1 \\
• - 2 & - 2 & - 3
• \end{array} \right]\]
• D)
• \[\left[ \begin{array} { c c c }
• 1 & 1 & 1 \\
• \frac { 1 } { 2 } & 1 & 1 \\
• \frac { 1 } { 2 } & \frac { 1 } { 2 } & \frac { 1 } { 3 }
• \end{array} \right]\]

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Definitions:

Interpretation Of Findings

The process of analyzing and drawing conclusions from data collected during research or investigation.

Negative Test

A type of software testing aimed at ensuring the application does not do what it is not supposed to do.

Opposing Interpretations

Differing views or analyses of data, texts, or events, reflecting varied perspectives or understandings.

Inferential Statistics

A branch of statistics that allows us to make predictions or inferences about a population based on sample data.