Question

Is this a one to one function?

http://tinypic.com/r/v5bdbp/5

Answer 1

enopw

Answer 2

ignore my answer. i made a mistake

Answer 3

Well do you know the answer?

Answer 4

no

Answer 5

i think it is

Answer 6

Well thats not very helpful @Euler271

Answer 7

No, it is not. A function is injective ('one-to-one') iff it does not map more than one value to its range from each value of its domain.

Answer 8

This is clearly not injective, since:
\[
\lfloor.2\rfloor=\lfloor.4\rfloor
\]Which is a counter example.

Answer 9

Thanks @LolWolf

Answer 10

But is it a function?

Answer 11

It is a function, but it is not one-to-one.