anonymous
  • anonymous
Find the domain of the function: (I'll post it below)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
|dw:1432741356266:dw|
anonymous
  • anonymous
http://www.mathsisfun.com/sets/domain-range-codomain.html
anonymous
  • anonymous
I know what is the definition of domain. I just need help in how to find it with the function that I posted.

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anonymous
  • anonymous
yes it has examples in the link
anonymous
  • anonymous
well it doesn't give an example on how to find domain with 4th root functions
anonymous
  • anonymous
@rational
rational
  • rational
the stuff inside radical must be \(\ge 0\)
rational
  • rational
\[\large 4-x^4~\ge~ 0\] solve \(x\)
anonymous
  • anonymous
oh okay. |dw:1432741753251:dw|
rational
  • rational
\[x^4~\le ~4 \] \[-\sqrt{2}\le x\le \sqrt{2}\]
anonymous
  • anonymous
the book says the answer is \(\sf [- \sqrt{2}, \sqrt{2}]\) yes that will be right. But how did you get \( \sqrt{2}\)? Is 4th root of 4 sqrt of 2? how?

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