Use an Ordinary Proof (Not Conditional or Indirect Proof)

question 35

Short Answer

Use an ordinary proof (not conditional or indirect proof):
1.K ⊃ L
2.∼K ∨ F
3.(L • F) ⊃ A
4.∼A
/ ∼K

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Definitions:

Age of Consumerism

A period characterized by an increase in the consumption of goods and services by individuals, reflecting changes in societal values and attitudes towards material wealth.

Marketing Concept Era

A period in marketing history during which businesses began to focus on meeting the needs and wants of consumers as a way to differentiate themselves from competitors.

Consumerism Era

A period characterized by the emphasis on consumer rights, the proliferation of goods and services, and the increase in consumption as a part of the economy.

Sales Era

A period in the history of marketing, roughly from the early to mid-20th century, characterized by a focus on selling products through aggressive sales techniques.