Determine if the vectors are orthogonal. 
Definitions:
Marginal Cost
The extra expense resulting from the manufacture of an additional unit of a product or service.
Competitive Price-Taker
A market participant who cannot influence the price on the market but instead must accept the prevailing market price.
Marginal Revenue
The additional income earned from selling one more unit of a good or service.
Competitive Price-Taker
A market participant who accepts the prevailing market prices as given because they have no power to influence those prices due to intense competition.
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