1
FILA A x < 0 ¨¨ x > 4 - 1 < x £ 0 ¨¨ 2 £ x £ 4 x > 1 x <- 2 x £- 2 False FILA B x < 0 ¨¨ x > 9 - 2 < x £ 0 ¨¨ 3 £ x £ 4 x >- 1 x <- 3 x £- 3 False
FILA A
x < 0 »» x > 4
−1 < x ≤ 0 »» 2 ≤ x ≤ 4
x > 1
x < −2
x ≤ −2
False
FILA B
x < 0 »» x > 9
−2 < x ≤ 0 »» 3 ≤ x ≤ 4
x > −1
x < −3
x ≤ −3
False
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