F(xin)ڵλã(y) > ̘I(y)(j) > Ԕ(x)(ni)
|(yng)ҏS偠tÓÓ̰
һ(y): ɽSÓÓ̷
һ(y): ϰ(yng)늏SỌ́Ób
I(yng)a(chn)ƷУÓˮ؇UҺwUˮٟtpw併؇C(j)ÓSƷr(ji)(bo)r(ji)