Suppose R and S Are Relations on {A, B, C $$R = \{ ( a , b ) , ( a , d ) , ( b , c ) , ( c , c ) , ( d , a ) \} \quad \text { and } \quad S = \{ ( a , c ) , ( b , d ) , ( d , a ) \}$$

question 68

Short Answer

suppose R and S are relations on {a, b, c, d}, where $$R = \{ ( a , b ) , ( a , d ) , ( b , c ) , ( c , c ) , ( d , a ) \} \quad \text { and } \quad S = \{ ( a , c ) , ( b , d ) , ( d , a ) \}$$
Find the combination of relations.
- $$R \circ S$$

Recognize strategies and treatments for drug addiction.

Understand the biological basis for drug tolerance and withdrawal symptoms.

Comprehend how perception and behavior are influenced by psychoactive drugs.

Acknowledge the societal perceptions and myths regarding drug use.

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Definitions:

Constant-cost Industry

An industry in which the costs of production do not change as the industry's total output changes.

Competitive Market

A market where there are many buyers and sellers so that no single buyer or seller can influence the price or market conditions.

Economic Profits

The variance between a corporation's total earnings and all its explicit and implicit expenditures.

Zero-profit Equilibrium

A situation in a perfectly competitive market where firms just cover their costs, leaving no surplus for economic profit.