Question

What is one -one, many -one function ? ​

Answer 1

ONE TO ONE

A one to one function is a function where every element of the range of the function corresponds to ONLY one element of the domain.

MANY TO ONE

A many-to-one function is a function where an element of range corresponds to more than one element in the domain.

Answer 2

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ONE - ONE FUNCTION:-

A function f : A --> B is said to be one one function or an injection if different elements of A have different images in B.

MANY - ONE FUNCTION:-

A function f : A --> B is said to be many- one function if two or more elements of set A have the same image in B.

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