Find the Inverse of the Matrix $$\left[ \begin{array} { l l } 6 & - 3 \\3 & - 6\end{array} \right]$$

question 54

Multiple Choice

Find the inverse of the matrix.
- $$\left[ \begin{array} { l l } 6 & - 3 \\3 & - 6\end{array} \right]$$

• A) \(\left[ \begin{array} { c } \frac { 2 } { 9 } - \frac { 1 } { 9 } \\ \frac { 1 } { 9 } - \frac { 2 } { 9 } \end{array} \right]\)
• B) \(\left[ \begin{array} { r r } - \frac { 2 } { 9 } & - \frac { 1 } { 9 } \\ \frac { 1 } { 9 } & \frac { 2 } { 9 } \end{array} \right]\)
• C) \(\left[ \begin{array} { r r } \frac { 2 } { 9 } & \frac { 1 } { 9 } \\ - \frac { 1 } { 9 } & - \frac { 2 } { 9 } \end{array} \right]\)
• D) \(\left[ \begin{array} { l } \frac { 1 } { 9 } - \frac { 2 } { 9 } \\ \frac { 2 } { 9 } - \frac { 1 } { 9 } \end{array} \right]\)

Identify factors that contribute to market power and competition level in different market structures.

Appreciate the role of brand names and packaging as forms of product differentiation in monopolistic competition.

Understand the implications of monopolistic competition on societal welfare, including deadweight loss and the trade-off between product variety and productive efficiency.

Analyze the impact of industry entry and exit on the long-run economic profitability in monopolistically competitive markets.

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Coupon Payment

The interest payment made to bondholders, typically semiannually, as a return on investment.

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A bond that makes regular interest payments to its holders, named after the detachable coupons once used for interest payments.

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The rate of return on an investment with no risk of financial loss, after adjusting for inflation.

Inflation Premium

The additional interest rate that lenders charge borrowers to compensate for the loss of purchasing power due to inflation.