If f: A → B is a one-one function, it is called a:
- Surjective function
- Constant function
- Injective function
- Bijective function
Explanation
A one-one function means that each element of the domain maps to a unique component of the codomain.
This is the definition of an injective function.
A bijective function is both injective and surjective.
A surjective function covers every element in the codomain.
A constant function maps all domain elements to the same codomain value — it is not injective.
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