Scalar (Dot) Product: What Is the Angle Between the Vector

question 9

Multiple Choice

Scalar (dot) product: What is the angle between the vector = + 3 - 2 - 3 and the +y-axis?

• A) 115°
• B) 65°
• C) 25°
• D) 155°
• E) 90°

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Definitions:

Marginal Revenue

The additional income gained from selling one more unit of a good or service.

Cournot Duopoly

A model of competition between two firms, in which each firm decides the quantity to produce independently and simultaneously with the goal of maximizing profit.

Perfectly Competitive

A market structure characterized by a large number of small firms, all selling identical products, where no single firm can influence the market price.

Monopoly Price

The price a monopolist sets, which is typically higher than both marginal and average costs, maximizing profits due to lack of competition.