anonymous
  • anonymous
Find the domain???? in interval notation 7x-2/(x+7)(x-5)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
where is this function undefined ?
anonymous
  • anonymous
Not sure, it just says to find the domain in he rational expression and answer in interval notation. It's from my pre-cacl class if that helps anything.
anonymous
  • anonymous
okay, so a function is undefined when the denominator is 0. Looking at this rational expression its undefined when x=-7 or x=5. right ?

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anonymous
  • anonymous
Yes, I understand that part. :)
anonymous
  • anonymous
okay so your domain is everything except those parts.
anonymous
  • anonymous
Ohhh okay okay, I understand.
anonymous
  • anonymous
in interval notation you use parenthesis to show not included and hard brackets to show included and u to basically connect them.
anonymous
  • anonymous
So the answer would be (-infinity,-7) U (-7,2) U (-2,infinity)
anonymous
  • anonymous
5 not 2.
anonymous
  • anonymous
and yes.
anonymous
  • anonymous
Okay! Thank you sooo much!
anonymous
  • anonymous
no problem :)

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