־ԸЩ?
1ܹkk
F(xin)A,˂y(tng)͘I(y)^cF(xin)wƵԭ,kƌW(xu)Уy(yu)ĸߌӴε˲ų䌍̎鮔,YݬR,I(y)ČW(xu)һD(zhun)۾ͳˡW(xu)̎,̌W(xu)|(zh)n;̌W(xu)^еòҵ֧ؔ,ֻܡëϡ,ɌW(xu),kƌW(xu)УǧČW(xu)M,kƌW(xu)Уm߰ǧ;I(y),ķɵλρf,kƌW(xu)УckƌW(xu)Уƽȵ,F(xin)͘I(y)ЅsҕkԺУĬF(xin)rаl(f)
2xИI(y)ԺУ
x=xI(y),xI(y)=x͘I(y)ИI(y)ԺУLڵkW(xu)^зeS}P(gun)ϵ,P(gun)I(y)g(sh)ԏҪ˜ʸ,_O(sh)P(gun)I(y)ԺУ,ԿxԺУеƌI(y)͘I(y),Ҳߡ,ʯƌW(xu)УƌW(xu)ԺF·W(xu)ԺˮˮW(xu)Ժȡ
3I(y)͘I(y)r
xУԾ͘I(y)Ŀ,W(xu)УI(y)O(sh)ú,I(y)͘I(y)ʾ͕ĿǰУI(y)͘I(y)r_e,W(xu)Уľ͘I(y)ʲųٿܡ,k,M@ЩW(xu)УxѮI(y)ČW(xu)˽,(yng)ԓ¶Ϣ
־Ը־Ը`^(q)Щ
ܶ־Ըr,]ԼČH֔(sh)ĸߵ,һЩTԺУğTI(y),@־ԸϳҊe`,һÌW(xu)УğTI(y),Լķ֔(sh)ϲԒ,߿־ԸҲDzȡ,F(xin)ƌW(xu)Уȡϵr
һЩ]Ѕ^(q)ֺøԺУ֮gݶP(gun)ϵ,^ݶP(gun)ϵǰԺУvȡƽӽ߿֔(sh)ԺУڵһ־Ը,Щ־Ըry,]д_ƽ־Ը,K(do)±܉ȡԺУ]ȡ,ԺУϷ֔(sh)n,@Ҳ־ԸϵһҪ`^(q)֮֮һ
־Ը֮ǰ]ЌҪĸԺУһw˽,ȫԈĸԺУ(sh)Ƿdz,ܶ־Ը֮ǰ]ЌP(gun)W(xu)УԼ(yu)I(y)Mȫ˽,(do)KMԺУ֮ԺУ͌I(y)ϲM
߿־Ը֮ǰһЩͶnҎ(gu)t߀˽;M־ԸK(do)־Ըʧ`rl(f),ʹԼKĎӡ