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19 July, 05:58

How to tell if a relation is a function and give an example.

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  1. 19 July, 07:37
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    Ex: f: R - - - > R

    f (x) = 2x+1

    Definition: For every value of x, exists only one value of f (x)

    f (1) = 2*1+1, f (1) = 2*1+1=3

    f (2) = 2*2+1=4+1=5

    ...

    f (100) = 2*100+1=200+1=201
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