Question

the domain and rang of f(x)=x-[x] is?

Answer 1

you mean \(|x|\) as in absolute x?

Answer 2

Or \(\lfloor x\rfloor\) as in the floor value of x?

Answer 3

floor value of x

Answer 4

http://www.wolframalpha.com/input/?t=crmtb01&f=ob&i=x-floor(x)
The graph is here

Answer 5

Remember that
Domain is related to x value and
Range is related to y value :)

Answer 6

@kc_kennylau I like the tool that you're using! And~~ I'm not quite sure but through analyze, the domain of the function is all real numbers and the range is y equal or smaller than zero, right?

Answer 7

Well I would say that the range is \(0\leq y<1\) or \(y=[0,1)\) :p

Answer 8

Oups, I thought it's asking for the absolute value, apologize~~

Answer 9

It is not your fault :)