Find the Products AB and BA to Determine Whether B $$A = \left[ \begin{array} { r r } 1 & 2 \\0 & - 6\end{array} \right]$$

question 111

Multiple Choice

Find the products AB and BA to determine whether B is the multiplicative inverse of A.
- $$A = \left[ \begin{array} { r r } 1 & 2 \\0 & - 6\end{array} \right]$$

• A)
• \[\left[ \begin{array} { r r }
• 1 & \frac { 1 } { 3 } \\
• 0 & - \frac { 1 } { 6 }
• \end{array} \right]\]
• B)
• \(\left[ \begin{array} { l } 1 - \frac { 1 } { 3 } \\ 0 - \frac { 1 } { 6 } \end{array} \right]\)
• C)
• \(\left[ \begin{array} { r r } 0 & - \frac { 1 } { 6 } \\ 1 & \frac { 1 } { 3 } \end{array} \right]\)
• D)
• \(\left[ \begin{array} { r r } - \frac { 1 } { 6 } & \frac { 1 } { 3 } \\ 0 & 1 \end{array} \right]\)

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Definitions:

Net Present Values

refers to the calculation that determines the present value of a series of future cash flows by discounting them at a certain rate, often used for assessing the profitability of investments.

Incremental Cost Approach

An analysis method that evaluates the additional costs of making decisions, comparing the costs that change with the decision versus those that do not change.

Purchase Cost

The amount paid to buy goods, materials, or assets.

Major Repairs

These are significant expenditures to restore or improve an asset, extending its useful life.