xxx \(x_x,\xxxxx,x_x\) xx xxxxxxxxxxx xxxxxxx xxxx x xxxxxxx xxxxxxxxxxxx xx \([x,x]\), xxxxx \(x>x\) xx xxxxxxx xxx \(x\xxx x\). xxxxx \(x=\xxx(x_x,\xxxxx,x_x)\). xxxx xxx xxxxxxx xxxxxxxxxx xxxxxxxxx xx \(x\), xxxxxxxxx xx xxxxxxxx xxxxxxxxx xxxxx \(x\), xxx xxxxxxxxx xxx xxxxxxxxxxx \(x=x(x)\) xxxx xxxxxxxxx xxx xxxx xxxxxxx xxxxx xx \(xx\).
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