Answer: The range of f must be contained in the domain of g.
- A The range of f must be contained in the domain of g
- B The domain of f must equal the range of g
- C f and g must both be one-one functions
- D f and g must have identical formulas
Correct answer: A. The range of f must be contained in the domain of g
Explanation: Outputs of f become inputs of g, so they must lie inside g's domain.
Concept context
Types of relations, equivalence classes, one-one and onto functions, composition, and invertible functions