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x in (-oo:+oo)
2*x-((500/2)*(x-500)) = 0.5 // - 0.5
2*x-((500/2)*(x-500))-0.5 = 0
2*x-250*(x-500)-0.5 = 0
2*x-250*(x-500)-0.5 = 0
125000-248*x-0.5 = 0
124999.5-248*x = 0
124999.5-248*x = 0
124999.5-248*x = 0 // - 124999.5
-248*x = -124999.5 // : -248
x = -124999.5/(-248)
x = 504.03024194
x = 504.03024194
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