锟斤拷锟斤拷平锟叫匡拷锟皆得碉拷锟斤拷锟斤拷平锟叫嗭拷锟斤拷

锟斤拷源锟斤拷锟絎(w锟斤拷ng)锟絡(lu锟斤拷)锟斤拷锟斤拷 2020-09-06 13:41:49

[锟斤拷(bi锟斤拷o)锟斤拷锟斤拷锟竭匡拷锟斤拷(sh锟斤拷)锟絎(xu锟斤拷) 锟斤拷(sh锟斤拷)锟絎(xu锟斤拷)知锟絉(sh锟斤拷)锟絚(di锟斤拷n)]

锟斤拷锟斤拷锟斤拷锟斤拷锟狡筹拷锟斤拷锟斤拷锟斤拷平锟斤拷只锟斤拷锟絝锟斤拷锟絕锟紷锟絣直锟斤拷锟斤拷一平锟斤拷锟斤拷@平锟斤拷慕锟斤拷锟斤拷c锟紷锟絣直锟斤拷平锟斤拷锟斤拷锟斤拷锟紷平锟斤拷锟�(n锟斤拷i)锟斤拷锟斤拷锟絚锟紷锟絣锟斤拷锟斤拷平锟叫碉拷直锟斤拷也锟斤拷锟紷锟絣直锟斤拷平锟斤拷锟斤拷锟斤拷锟斤拷平锟斤拷锟斤拷锟斤拷锟紷锟缴傦拷(g锟斤拷)平锟斤拷锟�(n锟斤拷i)锟斤拷直锟斤拷還锟叫匡拷锟斤拷锟角拷锟斤拷直锟斤拷锟斤拷

锟斤拷锟斤拷1直锟斤拷锟斤拷锟絴(zh锟斤拷)锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷1

锟斤拷锟斤拷一锟絣直锟斤拷锟斤拷一锟斤拷(g锟斤拷)平锟斤拷平锟叫ｏ拷锟絫锟絕锟紷锟絣直锟斤拷锟斤拷锟斤拷一平锟斤拷锟絚锟斤拷平锟斤拷慕锟斤拷锟斤拷c該直锟斤拷平锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷知锟斤拷a锟斤拷α锟斤拷a∈β锟斤拷α∩β=b锟斤拷锟斤拷锟紺锟斤拷a锟斤拷b

锟斤拷锟斤拷锟紺锟斤拷锟斤拷锟斤拷锟絆(sh锟斤拷)a锟絚b锟斤拷平锟斤拷锟斤拷锟絆(sh锟斤拷)锟斤拷锟斤拷锟侥斤拷锟絚(di锟斤拷n)锟斤拷P锟斤拷锟斤拷P锟斤拷直锟斤拷a锟斤拷b锟较★拷

锟斤拷锟斤拷锟斤拷b∈α锟斤拷∴a∩α=P

锟斤拷锟斤拷锟絚a锟斤拷α矛锟斤拷

锟斤拷锟斤拷∴a锟斤拷b

锟斤拷锟斤拷锟剿讹拷锟斤拷锟斤拷示锟斤拷直锟斤拷锟絚平锟斤拷平锟斤拷锟斤拷锟絅(y锟斤拷n)锟斤拷锟斤拷直锟斤拷锟絚直锟斤拷平锟叫★拷通锟絕直锟斤拷锟絚平锟斤拷平锟叫可得碉拷直锟斤拷锟絚直锟斤拷平锟斤拷锟斤拷锟紷锟給锟斤拷锟斤拷一锟絅锟斤拷平锟叫撅拷锟斤拷锟斤拷要锟斤拷锟斤拷锟斤拷

锟斤拷锟斤拷注锟解：直锟斤拷锟絚平锟斤拷平锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟絚锟紷锟斤拷(g锟斤拷)平锟斤拷锟斤拷锟叫碉拷直锟斤拷锟斤拷平锟斤拷锟斤拷锟斤拷直锟斤拷锟絚平锟芥垂直锟斤拷锟斤拷么锟紷锟絣直锟斤拷锟絚锟紷锟斤拷(g锟斤拷)平锟斤拷锟�(n锟斤拷i)锟斤拷锟斤拷锟斤拷直锟斤拷锟斤拷锟斤拷直锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷2

锟斤拷锟斤拷一锟絣直锟斤拷锟絚一锟斤拷(g锟斤拷)平锟斤拷平锟叫ｏ拷锟絫該直锟斤拷锟斤拷直锟节达拷平锟斤拷拇锟斤拷锟�锟斤拷

锟斤拷锟斤拷锟斤拷知锟斤拷a锟斤拷α锟斤拷b⊥α锟斤拷锟斤拷锟紺锟斤拷a⊥b

锟斤拷锟斤拷锟紺锟斤拷锟斤拷锟斤拷锟斤拷α锟侥达拷锟斤拷锟叫無锟斤拷(sh锟斤拷)锟絣锟斤拷锟斤拷丝蓪锟絙平锟斤拷锟斤拷锟絚a锟洁交锟斤拷锟絆(sh锟斤拷)平锟狡碉拷直锟斤拷锟斤拷c锟斤拷a∩c=M锟斤拷c锟絚α锟侥达拷锟斤拷锟絅锟斤拷

锟斤拷锟斤拷锟竭兩條锟洁交直锟斤拷锟絖锟斤拷一锟斤拷(g锟斤拷)平锟斤拷

锟斤拷锟斤拷∴锟絆(sh锟斤拷)a锟斤拷c锟斤拷(g锟斤拷u)锟缴碉拷平锟斤拷锟�β锟斤拷锟斤拷α∩β=l

锟斤拷锟斤拷锟斤拷N∈c锟斤拷N∈α锟斤拷c?β

锟斤拷锟斤拷∴N∈l锟斤拷锟斤拷锟缴讹拷锟斤拷1锟斤拷知a锟斤拷l

锟斤拷锟斤拷锟斤拷c⊥α锟斤拷l?α

锟斤拷锟斤拷∴c⊥l

锟斤拷锟斤拷∴a⊥c

锟斤拷锟斤拷锟斤拷锟斤拷平锟狡诧拷锟斤拷變直锟斤拷锟侥凤拷锟斤拷锟斤拷锟斤拷锟絘⊥b

锟斤拷锟铰高匡拷锟結訊锟斤拷锟竭匡拷锟斤拷锟斤拷锟斤拷锟斤拷前锟斤拷(zh锟斤拷n)锟斤拷锟斤拷志愿锟斤拷锟�(b锟斤拷o)锟斤拷锟饺★拷锟�?j锟斤拷n)?sh锟斤拷)锟斤拷锟斤拷

锟斤拷锟斤拷锟竭匡拷锟絩(sh锟斤拷)锟絞锟斤拷锟斤拷全锟斤拷锟斤拷要锟斤拷(ji锟斤拷)锟絚(di锟斤拷n)

锟斤拷锟斤拷锟組锟斤拷"锟竭匡拷锟絎(w锟斤拷ng)"微锟脚癸拷锟斤拷號