## mathmath333 one year ago Find the domain and range of this function

1. mathmath333

\large \color{black}{\begin{align} f(x)=|x|\hspace{.33em}\\~\\ \end{align}}

2. mathmath333

|dw:1432997599944:dw|

3. anonymous

for the domain, you have to look where the x exists, which is in the whole section of R, you understand?

4. anonymous

For the range you have to look to the graph, and where it all exists on the Y-scale (the vertical one)

5. mathmath333

x is all negative and positive values

6. anonymous

That's right, and Y?

7. mathmath333

y is positive values

8. anonymous

Indeed, so the x values are the domain and the y-values are the range.

9. mathmath333

how to write this in standard form

10. anonymous

Domain: ] -infinity, infinity[ Range : [0, infinity[ (that's how they write it in our region)

11. mathmath333

i have to write like this f(x)=x^2 domain of f ={x:x$$\in$$ R}