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jim_thompson5910Best ResponseYou've already chosen the best response.1
I'm guessing what I said last didn't help much?
 one year ago

monroe17Best ResponseYou've already chosen the best response.1
It usually helps for that one problem, then I try to do it myself and I get completely lost :/ Functions are my weakness...
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
If so, then we can graph x(x15) to get this (see attached)
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
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
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
so this means that the solution to x(x15) >= 0 is (inf, 0] U [15, inf)
 one year ago

monroe17Best ResponseYou've already chosen the best response.1
yeah (inf,0]U[15,inf) ?
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
where 'inf' stands for infinity
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
yes you nailed it
 one year ago
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