Скачать или смотреть Functions | Introduction to functions | A Level | Math

Define a function as a mathematical relationship that takes inputs and produces outputs.

Describe the domain of a function as the set of all possible input values and the range as the set of all possible output values.



Explain the concept of a one-to-one function, highlighting that each input corresponds to a unique output, demonstrated graphically through the horizontal line test.

Identify a many-to-one function, recognizing situations where multiple inputs can lead to the same output.

Verify the uniqueness of a function using the vertical line test, ensuring that for each input, there is only one corresponding output.

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