Let $A = \left( \begin{array} { c c } 0 & 1 \\- 1 & 0\end{array} \right)$

question 1

Multiple Choice

Let $A = \left( \begin{array} { c c } 0 & 1 \\- 1 & 0\end{array} \right)$ . Then $e ^ { A t } =$

• A) \(I \cos t + A \sin t\)
• B) \(I \cos t - A \sin t\)
• C) \(l e ^ { t } + A e ^ { - t }\)
• D) \(l e ^ { - t } + A e ^ { - t }\)
• E) \(I \cosh t + A \sinh t\)

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Definitions:

Domestic Producer Surplus

The difference between the amount domestic producers are willing to accept for a good or service and the actual amount they receive.

World Price

The world price is the price at which goods are traded internationally, determined by global supply and demand conditions.

Government Payments

Funds distributed by the government to individuals, businesses, or other governmental entities, which can include subsidies, grants, or welfare payments.

Point Elasticity

A measure of how responsive the quantity demanded or supplied of a good is to a change in its price, calculated at a particular point on the demand or supply curve.