The Value of an Economic Variable Over Time Satisfies the Relation

question 2

Multiple Choice

The value of an economic variable over time satisfies the relation
$R ( t ) = \frac { 6 } { 1 + t ^ { 2 } } + 3 e ^ { - 0.4 t }$ , Find the equilibrium value of $R$ .

• A) it does not exist
• B) 3
• C) 0
• D) 9
• E) 6

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Definitions:

Intraspecific Aggression

Aggression displayed by members of the same species towards one another, often over resources, territory, or mating rights.

Conspecifics

Members of the same species, especially in the context of social interaction and behavior.

Survival of the Fittest

A concept in evolutionary biology suggesting that individuals or species that are best adapted to their environment are more likely to survive and reproduce.

Contraprepared

A concept related to learning and behavioral psychology, suggesting certain behaviors or responses are more difficult to learn due to evolutionary predispositions.