[size=150][size=100]Prova a muovere x [i]intorno[/i] a 6 (anche variando il raggio dell'intorno). [br]Man mano che x si avvicina a 6, a quale valore si avvicina la sua immagine f(x)?[br]E quando x si avvicina a 2[/size]?[/size]

Diremo che:[br][center][img width=105,height=34]data:image/png;base64,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[/img][/center]quando [i][color=#ff0000]man mano che x si avvicina a x[sub]0[/sub] f(x) si avvicina a un certo valore l.[/color][/i]