What does f(x)=3 mean?

1 Answer
Gió
Jun 3, 2015

It means that you have a function that every time you input a value of #x# gives you #3#.
If #x=45# then #y=3#...if #x=-1.234# then, again, #y=3# and so on!
It is like to take a bus that charges a fixed fee of $ 3 regardless of the duration of the journey...you can say "I want to go to this or that stop (this is the #x#)" it doesn't matter...you'll alway pay $ 3 (that is the #y#).

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