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jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1I'm guessing what I said last didn't help much?

monroe17
 2 years ago
Best ResponseYou've already chosen the best response.1It usually helps for that one problem, then I try to do it myself and I get completely lost :/ Functions are my weakness...

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1If so, then we can graph x(x15) to get this (see attached)

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1Notice 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
 2 years ago
Best ResponseYou've already chosen the best response.1so this means that the solution to x(x15) >= 0 is (inf, 0] U [15, inf)

monroe17
 2 years ago
Best ResponseYou've already chosen the best response.1yeah (inf,0]U[15,inf) ?

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1where 'inf' stands for infinity

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1yes you nailed it
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