Use a Graphing Calculator to Find the Inverse of the Matrix

question 265

Multiple Choice

Use a graphing calculator to find the inverse of the matrix. Give five decimal places, if necessary.
- $$A = \left[ \begin{array} { c c c } 1 / 3 & 2 / 7 & 4 / 5 \\17 / 11 & 5 & 0 \\18 / 13 & - 5 / 6 & 8 / 7\end{array} \right]$$

• A) \(\left[ \begin{array} { c c c } 3 & 3.5 & 1.25 \\ 0.64706 & 5 & 0 \\ 0.72222 & - 1.2 & 1.14286 \end{array} \right]\)
• B)
• \[\left[ \begin{array} { l l l }
• 0 & 0 & 1 \\
• 0 & 1 & 0 \\
• 1 & 0 & 0
• \end{array} \right]\]
• C)
• \[\left[ \begin{array} { r r r }
• - 1.10557 & 0.19216 & 0.77390 \\
• 0.34172 & 0.14061 & - 0.23920 \\
• 1.58861 & - 0.13028 & - 0.23703
• \end{array} \right]\]
• D)
• \[\left[ \begin{array} { r r r }
• 2.65952 & 0.15830 & - 1.86167 \\
• - 9.04238 & - 0.33824 & 6.32966 \\
• 3.37129 & 0.05484 & - 1.48490
• \end{array} \right]\]

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Definitions:

Supply Curve

A graphical depiction that shows the relationship between the price of a good or service and the quantity of that good or service that suppliers are willing and able to provide, at given prices.

Supply Curve

A graphical representation showing the relationship between the quantity of goods that producers are willing to sell and the price of those goods.

Determinant Of Supply

A factor that influences the quantity of a good or service that producers are willing to offer for sale at a given price over a period.

Current Production

The total amount of goods and services produced by an economy or firm at the present time.