anonymous
  • anonymous
g(x)=sqrt(x(x-15)) find the domainnnnnnn.... :/
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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jim_thompson5910
  • jim_thompson5910
I'm guessing what I said last didn't help much?
anonymous
  • anonymous
It usually helps for that one problem, then I try to do it myself and I get completely lost :/ Functions are my weakness...
jim_thompson5910
  • jim_thompson5910
If so, then we can graph x(x-15) to get this (see attached)

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jim_thompson5910
  • jim_thompson5910
Notice how the red graph is above the x axis from -infinity to 0 then it dips below the x axis but it comes back up and goes above the x axis from 15 to infinity
jim_thompson5910
  • jim_thompson5910
so this means that the solution to x(x-15) >= 0 is (-inf, 0] U [15, inf)
anonymous
  • anonymous
yeah (-inf,0]U[15,inf) ?
jim_thompson5910
  • jim_thompson5910
where 'inf' stands for infinity
jim_thompson5910
  • jim_thompson5910
yes you nailed it

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