Examlex
Find the root. If the root does not exist as a real number, write not a real number .
Excludable
A characteristic of a good or service that allows owners or producers to prevent its use by people who have not paid for it.
Nonpayers
Individuals who benefit from a good or service without contributing to its cost, often associated with public goods.
Nonrival in Consumption
A characteristic of some goods or services where one person's consumption does not reduce availability for others.
Marginal Cost
The additional cost incurred by producing one more unit of a product or service, a key concept used in decision-making and pricing strategies.
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