[tex]\displaystyle\bf\\y > 0 \ \ \ pri \ \ \ -1 < x < 1\\\\\\y < 0 \ \ \ pri \ \ \ x\in(-\infty \ ; \ -1)\cup(1 \ ; \ +\infty)[/tex]
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[tex]\displaystyle\bf\\y > 0 \ \ \ pri \ \ \ -1 < x < 1\\\\\\y < 0 \ \ \ pri \ \ \ x\in(-\infty \ ; \ -1)\cup(1 \ ; \ +\infty)[/tex]