Hello there:

Can anybody help me Graph and find the Domain and Range of these:

f(x) = [x + 1/2] what is the graph of this step function

g(x)= 2 - x

please help me

Printable View

- Aug 2nd 2010, 01:56 PMrcsStep or Floor Function
Hello there:

Can anybody help me Graph and find the Domain and Range of these:

f(x) = [x + 1/2] what is the graph of this step function

g(x)= 2 - x

please help me - Aug 2nd 2010, 02:08 PMVlasev
is [x+1/2] the nearest integer function?

- Aug 2nd 2010, 02:11 PMMath Major
The domain of the floor function is all real numbers, and the range will only be the set of integers.

In order to graph the function, remember that if $\displaystyle f $ is the floor function, then for $\displaystyle x = a.b $ for $\displaystyle a $ the integer portion of x and $\displaystyle b $ the decimal portion of x, $\displaystyle f(x) = a $. - Aug 4th 2010, 10:45 AMrcs
yes vlasev i need a picture of their graph ... floor function ... please help

- Aug 4th 2010, 11:27 AMPlato
- Aug 7th 2010, 03:49 AMrcs
i gues i have found the answer :)

g(x) = 2 – x f(x)

g(x) = 2 – xn where, n≤x<n+1

if

n = 2 2 -2x , 2≤x<3

n = 1 2 –x , 1≤x<2

n = 0 2 , 0≤x<1

n = -1 2 + x , -1≤x<0

n = -2 2 +2x , -2≤x<-1

i could hardly paste or show to you the illustration of this function... i have the image of the graph but i dnt knw how to upload here

[/B]