Decide Whether or Not Matrix a and Matrix B Are

question 35

Multiple Choice

Decide whether or not matrix A and matrix B are inverses.
- $$A = \left[ \begin{array} { r r r } 1 & 0 & 0 \\- 1 & 1 & 0 \\1 & 1 & 1\end{array} \right] \text { and } B = \left[ \begin{array} { r r r } 1 & 0 & 0 \\1 & 1 & 0 \\- 2 & - 1 & 1\end{array} \right]$$

• A) Yes
• B) No

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Definitions:

Floating Exchange Rates

A system where the value of a currency is allowed to fluctuate according to the foreign exchange market without direct government control.

National Currencies

The official money used in different countries, which serves as a medium of exchange within each nation and can have different forms such as notes and coins.

Buying Power

The amount of goods or services that can be purchased with a unit of currency.

Flexible Exchange Rates

A currency system where the price of a country's currency is set by the forex market based on supply and demand relative to other currencies.