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(0,1) (0,3] [1,2) (﹣∞,1)∪[2,+∞)
(﹣∞,﹣3] (﹣∞,﹣3) (﹣∞,0] [3,+∞)
[﹣2,3] (﹣3,5) {0,1,2,3} {1,2,3}
{﹣1,0,1} {﹣1,0} {0,1} {0}
{﹣1,0,1,2,4} {﹣1,0,2,4} {0,2,4} {0,1,2,4}
(﹣5,4) (﹣3,2) (2,4) [﹣3,2)
(﹣∞,﹣3] (﹣∞,﹣3) (﹣∞,0] [3,+∞)
{﹣1,0,1} {﹣1,0} {0,1} {0}
{﹣1,1,2} {1,2} {﹣1,2} {2}
{0} {0,3} {﹣1,0,3} {0,3,4}
(0,3) (﹣∞,﹣1)∪(0,+∞)
(﹣∞,﹣1)∪(3,+∞) (﹣1,3)