ɶWվO7
ɶWվO˾ļҺɶWվOа@Щ}ǽվȺw^PĵĆ}ôɶWվOƼСҺεĒä³ɶWվO7

һעԺͷُI
һõǾWվɹһעҪӛұMxͨcomעԺһҪJCύoҪ_ļҷ̵ķȽhƺa^
Wվ䰸
_ļҷ̷ͿԂ䰸˾͂䰸˵ģ˾͂䰸ɹ˾һ܁y䰸һ15
Wվ
WվԼҎ(gu)߸ɶWվ˾߄Wվ
WվOӋ
cɶWվOӋͨϲgLԼWվwąf(xi){
Wվǰ_l(f)
ͳɶWվǰ_l(f)̎_ǰ˽ЧMҪf(xi)
Wվ__l(f)
ɶWվ˹̎_딵_Wվȫ
ߡ{ԇϾ
^һϵ_l(f)ͨ͜ʣ¾ǰl(f)l(f)yԇ]}ͿԽϾ
ɶWվO7̾@ЩϣҪڳɶWվO˽ײ̲E@ӾͲڳɶWվOã
YӍ