Examlex
Use of the terms AND, OR, and NOT in an online search illustrate the use of "field searching."
Perfect Substitutes
Two or more goods that can be used in place of one another with no loss of utility for the consumer, resulting in constant marginal rates of substitution.
Perfect Substitutes
Goods or services that can be used in exactly the same way and are interchangeable by consumers.
Coupons
Vouchers or codes offering a discount on the purchase price of goods or services.
Utility Function
A mathematical representation of how a set of choices maps to utility levels, indicating preferences over different bundles of goods or outcomes.
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