03-11-2017
Mathematics

contestada

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

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dannielle dannielle

03-11-2017

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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