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lim f(x) = x→2- lim f(x) = x→+∞ +∞ -∞ lim f(x) = x→-1+ lim f(x) = x→-∞ +∞ -∞ lim f(x) = x→-1+ lim f(x) = x→+∞ +∞ -∞ lim f(x) = x→4+ lim f(x) = x→-∞ -∞ +∞ lim f(x) = x→4- x→-∞ lim f(x) = -∞ +∞ lim f(x) = x→1- lim f(x) = x→+∞ -∞ +∞ lim f(x) = x→-1- lim f(x) = x→-∞ +∞ -∞ lim f(x) = x→-2- lim f(x) = x→+∞ +∞ -∞ x→-4+ lim f(x) = lim f(x) = x→+∞ +∞ -∞ lim f(x) = x→4+ lim f(x) = x→-∞ +∞ -∞ |