I(y)nW(xu)(x)
1x
1Ŀ䛷ͨxĿ֪Rwϵ˽⣬˽ă(ni)߉Y(ji)(gu)Ȼȥxă(ni)ݡ
2wϵԼW(xu)֪Rܣt֪R(ni)ݺƷz܉]۾ĕrǰF(xin)֪Rwϵ
3}ԼW(xu)֪RY(ji)Ɇ}ÿµ}}Ǻܺõij}زġMܰе֪RҪc܉Ɇ}
2ҪW(xu)Pӛ
1ͨ^Ŀ䛷wϵČW(xu)(x)γɿܺмͬr(yng)_ʼPӛPӛڄ_ʼĕrܕӰ푿ٶSrgİl(f)չl(f)F(xin)Pӛ˼·nă(ni)ݶк̎
2PӛķǺεذѕϵ`(ni)ݳPӛǰѕϵă(ni)ɞһС}}́MКw{Y(ji)
3}ʹ÷
1Jvԇ}ÿY(ji)ڿ_(f)(x)_(f)(x)cÑ(yng)ԇʂ䶼ʮҪ
2ԇ}Ҫ(yng)(dng)˽ׂ棺}L(fng)y׳̶עػA(ch)֪R(yng)߀ǰl(f)]Ƿƫy֬F(xin)ȣ}}ԇֲֵԇcĂ(c)c
Л]ôyֻҪԶԼеěQeӓuӓuȥҪăHH_ʼ(f)(x)һcһcŪ֪RвľͶױ£A(y)tA(y)tṲ̤ŬW(xu)(x)ҊһõĽY(ji)