ƈ־ԸЩ
1xИI(y)ԺУ
x=xI(y),xI(y)=x͘I(y)ИI(y)ԺУLڵkW^зeS}P(gun)ϵ,P(gun)I(y)g(sh)ԏҪ˜ʸ,_O(sh)P(gun)I(y)ԺУ,ԿxԺУеƌI(y)͘I(y),Ҳ,ʯƌWУƌWԺF·WԺˮˮWԺ
2I(y)͘I(y)r
xУԾ͘I(y)Ŀ,WУI(y)O(sh)ú,I(y)͘I(y)ʾ͕ĿǰУI(y)͘I(y)r_e,WУľ͘I(y)ʲųٿ,k,־ԸǰM@ЩWУxѮI(y)ČW˽,ԓ¶Ϣ
3쿂wr
ǷڽʵČWУ֮,˃(ni)ݿڸW(wng)վԃWУr,cuܛӲO(sh)ʩ,ѽ(jng)xăxĸУ,־ԸǰM܌̽Lһ,ЩWУrп䏈ɷ,Ҋ錍
ȡCʵk
ڈ־Ըr,Ҹױȡ,ԼČWУȡ,oͬWch:ƈr,ʡǰƽ־Ըȡ,ôһWУҪĺһc,֔(sh)Լ߿֔(sh)߳һcc,@ܱȡ˸,ȡҲ̝,߀еڶ־Ըȡ
߿ô־Ը
߿һʡ8·_ʼ־Ը,Ҳвʡ7·ݾˌ־Ը,xĎׂI(y),hČI(y)],ȡĿ,ČI(y){(dio),ϴWٓQI(y)]ȡ߀ЙC־Ը,ȡęCe,Ҫ