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10? 9?? ?????: ?????? “??? ???? ??”(“???? ??2”)? ??? 29? ???? ??? ????. ? ??? ?? ????? ???? ?? ?????f(x)? ?? ??(????)? ??? ????. ???? ???? ??? ??? “??”, ????f(x)? ?? ??? ????. ??? ???? ???? ? ??? “???? ??”? ?? ??? ???? ? ??? ?? ???? ????.
??? 30?, ???? ?????? ?? ??? ????? ????? ?? ???? ?? ??? ????. ??? ???? ???, ??, ??? ??? ??? ????. ??? ???? ???? ??? ??? ?? ???? ????? ??? ??? ? ??? ????? ?? ??? ??? ???? ??? ???? ???? ??? ?????? ?? ????? ???? ??.
“??? ???? ??”? ??? ?????????? ??? “??”? ??? ??? ??? ?? ???? ???? ???? ???? ??? ??? ????? ??? ?? ????? ?? ???. ??? ??? ???? “??”? ?? ???? ??? ?? ???.
???? ??? “??? ???? ??”? ?? 5?? ??? ???? ??? ???? ??? ??.