Takao Ono wrote in message news:<040517170416.M0122627@flame.hirata.nuee.nagoya-u.ac.jp>...
> ????? f(x) ???? ?(?f(x)) = -?f(x) ?????????
> ???????.


?(?x)??(x_1?x)?{x_1?(x??x}?{x_1?x}???x ?????

????? f(x) ???? ?(?f(x)) ???f(x) ???????
??????


?(?f(x)) ??{f(x??x)?f(x)}
??{f(x??x)}??f(x)
?[f{(x??x)??x}?{f(x??x)]?[f(x??x)?f(x)]
?f(x?2?x)?2f(x??x)?f(x)


# ???????????????????????

f(x)?x ??????(?x)?(x?2?x)?2(x??x)?x??  ?(???)?