mathmath333
  • mathmath333
Find the domain and range of this function
Mathematics
jamiebookeater
  • jamiebookeater
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mathmath333
  • mathmath333
\(\large \color{black}{\begin{align} f(x)=|x|\hspace{.33em}\\~\\ \end{align}}\)
mathmath333
  • mathmath333
|dw:1432997599944:dw|
anonymous
  • anonymous
for the domain, you have to look where the x exists, which is in the whole section of R, you understand?

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anonymous
  • anonymous
For the range you have to look to the graph, and where it all exists on the Y-scale (the vertical one)
mathmath333
  • mathmath333
x is all negative and positive values
anonymous
  • anonymous
That's right, and Y?
mathmath333
  • mathmath333
y is positive values
anonymous
  • anonymous
Indeed, so the x values are the domain and the y-values are the range.
mathmath333
  • mathmath333
how to write this in standard form
anonymous
  • anonymous
Domain: ] -infinity, infinity[ Range : [0, infinity[ (that's how they write it in our region)
mathmath333
  • mathmath333
i have to write like this f(x)=x^2 domain of f ={x:x\(\in\) R}

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