锟竭匡拷锟斤拷(sh锟斤拷)锟絎(xu锟斤拷)锟斤拷輪锟斤拷(f锟斤拷)锟斤拷(x锟斤拷)锟斤拷锟斤拷(sh锟斤拷)锟斤拷锟筋定锟絰锟斤拷锟絵锟斤拷锟結(ji锟斤拷)
2018-12-31 17:35:41锟斤拷锟矫網(w锟斤拷ng)
锟斤拷锟斤拷锟斤拷锟叫旓拷(sh锟斤拷)锟絎(xu锟斤拷)锟斤拷锟斤拷(sh锟斤拷)锟斤拷锟斤拷锟絇(gu锟斤拷n)锟斤拷锟斤拷
锟斤拷锟斤拷1.锟斤拷锟叫旓拷(sh锟斤拷)锟絎(xu锟斤拷)锟斤拷锟斤拷(sh锟斤拷)锟斤拷锟斤拷(sh锟斤拷)锟侥革拷锟筋：锟絆(sh锟斤拷)A锟斤拷B锟角非空的旓拷(sh锟斤拷)锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟侥筹拷锟�(g锟斤拷)锟絖锟斤拷锟侥岋拷锟斤拷(y锟斤拷ng)锟絇(gu锟斤拷n)系f锟斤拷使锟斤拷锟节猴拷锟斤拷(sh锟斤拷)A锟叫碉拷锟斤拷锟斤拷一锟斤拷(g锟斤拷)锟斤拷(sh锟斤拷)x锟斤拷锟节猴拷锟斤拷(sh锟斤拷)B锟叫讹拷锟斤拷唯一锟絖锟斤拷锟侥旓拷(sh锟斤拷)f(x)锟斤拷锟斤拷锟斤拷锟斤拷(y锟斤拷ng)锟斤拷锟斤拷么锟酵稱f锟斤拷A→B锟斤拷暮锟斤拷锟�(sh锟斤拷)A锟斤拷锟斤拷锟斤拷(sh锟斤拷)B锟斤拷一锟斤拷(g锟斤拷)锟斤拷锟斤拷(sh锟斤拷).記锟斤拷锟斤拷y=f(x)锟斤拷x∈A.锟斤拷锟叫ｏ拷x锟斤拷锟斤拷锟斤拷變锟斤拷锟斤拷x锟斤拷取值锟斤拷锟斤拷A锟斤拷锟斤拷锟斤拷锟斤拷(sh锟斤拷)锟侥讹拷锟絰锟斤拷;锟絚x锟斤拷值锟斤拷锟斤拷锟斤拷(y锟斤拷ng)锟斤拷y值锟斤拷锟斤拷锟斤拷锟斤拷(sh锟斤拷)值锟斤拷锟斤拷锟斤拷(sh锟斤拷)值锟侥猴拷锟斤拷(sh锟斤拷){f(x)|x∈A}锟斤拷锟斤拷锟斤拷锟斤拷(sh锟斤拷)锟斤拷值锟斤拷.
锟斤拷锟斤拷注锟解：
锟斤拷锟斤拷锟斤拷锟斤拷(sh锟斤拷)锟斤拷锟絰锟斤拷锟斤拷使锟斤拷锟斤拷(sh锟斤拷)式锟斤拷锟斤拷锟絰锟侥岋拷(sh锟斤拷)锟斤拷(sh锟斤拷)x锟侥猴拷锟斤拷(sh锟斤拷)锟絈锟介函锟斤拷(sh锟斤拷)锟侥讹拷锟絰锟斤拷
锟斤拷锟斤拷锟襟函旓拷(sh锟斤拷)锟侥讹拷锟絰锟斤拷r(sh锟斤拷)锟叫诧拷锟斤拷式锟組锟斤拷锟斤拷要锟斤拷锟斤拷(j锟斤拷)锟角ｏ拷
锟斤拷锟斤拷(1)锟斤拷式锟侥凤拷母锟斤拷锟斤拷锟斤拷锟斤拷;
锟斤拷锟斤拷(2)偶锟轿凤拷锟斤拷锟侥憋拷锟絖锟斤拷锟斤拷(sh锟斤拷)锟斤拷小锟斤拷锟斤拷;
锟斤拷锟斤拷(3)锟斤拷锟斤拷(sh锟斤拷)式锟斤拷锟芥數(sh锟斤拷)锟斤拷須达拷锟斤拷锟斤拷;
锟斤拷锟斤拷(4)指锟斤拷(sh锟斤拷)锟斤拷锟斤拷锟斤拷(sh锟斤拷)式锟侥底憋拷須达拷锟斤拷锟斤拷锟揭诧拷锟斤拷锟斤拷1.
锟斤拷锟斤拷(5)锟斤拷锟斤拷锟斤拷锟�(sh锟斤拷)锟斤拷锟斤拷一些锟斤拷锟斤拷锟斤拷锟斤拷(sh锟斤拷)通锟絕锟侥則锟絓(y锟斤拷n)锟斤拷Y(ji锟斤拷)锟较讹拷锟缴碉拷.锟斤拷么锟斤拷锟斤拷锟侥讹拷锟絰锟斤拷锟斤拷使锟斤拷锟斤拷锟街讹拷锟斤拷锟斤拷锟絰锟斤拷x锟斤拷值锟組锟缴的猴拷锟斤拷(sh锟斤拷).
锟斤拷锟斤拷(6)指锟斤拷(sh锟斤拷)锟斤拷锟斤拷撞锟斤拷锟斤拷缘锟斤拷锟斤拷锟�锟斤拷
锟斤拷锟斤拷(7)锟斤拷(sh锟斤拷)锟紿锟斤拷锟絵锟叫的猴拷锟斤拷(sh锟斤拷)锟侥讹拷锟絰锟斤拷還要锟斤拷锟紺锟斤拷(sh锟斤拷)锟紿锟斤拷锟絵锟斤拷锟斤拷锟絰.
锟斤拷锟斤拷?锟斤拷同锟斤拷锟斤拷(sh锟斤拷)锟斤拷锟叫斷方锟斤拷锟斤拷锟劫憋拷锟絖(d锟斤拷)式锟斤拷同(锟絚锟斤拷示锟斤拷變锟斤拷锟酵猴拷锟斤拷(sh锟斤拷)值锟斤拷锟斤拷母锟給锟絇(gu锟斤拷n));锟节讹拷锟絰锟斤拷一锟斤拷(锟斤拷锟絚(di锟斤拷n)锟斤拷锟酵拷r(sh锟斤拷)锟竭傦拷)
锟斤拷锟斤拷2.锟斤拷锟叫旓拷(sh锟斤拷)锟絎(xu锟斤拷)锟斤拷锟斤拷(sh锟斤拷)值锟斤拷:锟饺匡拷锟絔锟戒定锟絰锟斤拷
锟斤拷锟斤拷(1)锟絕锟届法
锟斤拷锟斤拷(2)锟戒方锟斤拷
锟斤拷锟斤拷(3)锟斤拷锟絈锟斤拷
锟斤拷锟斤拷3.锟斤拷锟斤拷(sh锟斤拷)锟紻锟斤拷知锟絉锟絯锟絳
锟斤拷锟斤拷(1)锟斤拷锟絰锟斤拷锟斤拷平锟斤拷直锟斤拷锟斤拷锟斤拷(bi锟斤拷o)系锟斤拷锟斤拷锟皆猴拷锟斤拷(sh锟斤拷)y=f(x),(x∈A)锟叫碉拷x锟斤拷M锟斤拷锟斤拷(bi锟斤拷o)锟斤拷锟斤拷锟斤拷(sh锟斤拷)值y锟斤拷v锟斤拷锟斤拷(bi锟斤拷o)锟斤拷锟絚(di锟斤拷n)P(x锟斤拷y)锟侥猴拷锟斤拷(sh锟斤拷)C锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷(sh锟斤拷)y=f(x),(x∈A)锟侥圖锟斤拷.C锟斤拷每一锟絚(di锟斤拷n)锟斤拷锟斤拷锟斤拷(bi锟斤拷o)(x锟斤拷y)锟斤拷锟組锟姐函锟斤拷(sh锟斤拷)锟絇(gu锟斤拷n)系y=f(x)锟斤拷锟斤拷锟絕锟斤拷锟斤拷锟皆滿锟斤拷y=f(x)锟斤拷每一锟組锟斤拷锟斤拷?q锟斤拷)锟斤拷?sh锟斤拷)锟斤拷x锟斤拷y锟斤拷锟斤拷锟斤拷(bi锟斤拷o)锟斤拷锟絚(di锟斤拷n)(x锟斤拷y)锟斤拷锟斤拷锟斤拷C锟斤拷.
锟斤拷锟斤拷(2)锟斤拷锟斤拷
锟斤拷锟斤拷A锟斤拷锟斤拷锟絚(di锟斤拷n)锟斤拷锟斤拷
锟斤拷锟斤拷B锟斤拷锟紻锟斤拷變锟絈锟斤拷
锟斤拷锟斤拷锟斤拷锟斤拷變锟絈锟斤拷锟斤拷锟斤拷锟斤拷锟絅
锟斤拷锟斤拷1)平锟斤拷變锟絈
锟斤拷锟斤拷2)锟斤拷s變锟絈
锟斤拷锟斤拷3)锟斤拷锟絈變锟絈
锟斤拷锟斤拷4.锟斤拷锟叫旓拷(sh锟斤拷)锟絎(xu锟斤拷)锟斤拷锟斤拷(sh锟斤拷)锟絕(q锟斤拷)锟絞锟侥革拷锟斤拷
锟斤拷锟斤拷(1)锟斤拷锟斤拷(sh锟斤拷)锟絕(q锟斤拷)锟絞锟侥凤拷類ｏ拷锟絖锟絕(q锟斤拷)锟絞锟斤拷锟絔锟絕(q锟斤拷)锟絞锟斤拷锟斤拷锟絖锟斤拷锟絔锟絕(q锟斤拷)锟絞
锟斤拷锟斤拷(2)锟給锟紽锟絕(q锟斤拷)锟絞
锟斤拷锟斤拷5.映锟斤拷
锟斤拷锟斤拷一锟斤拷锟�锟斤拷锟絆(sh锟斤拷)A锟斤拷B锟角兩傦拷(g锟斤拷)锟角空的猴拷锟斤拷(sh锟斤拷)锟斤拷锟斤拷锟斤拷锟侥骋伙拷锟�(g锟斤拷)锟絖锟斤拷锟侥岋拷锟斤拷(y锟斤拷ng)锟斤拷锟絫f锟斤拷使锟斤拷锟节猴拷锟斤拷(sh锟斤拷)A锟叫碉拷锟斤拷锟斤拷一锟斤拷(g锟斤拷)元锟斤拷x锟斤拷锟节猴拷锟斤拷(sh锟斤拷)B锟叫讹拷锟斤拷唯一锟絖锟斤拷锟斤拷元锟斤拷y锟絚之锟斤拷锟斤拷(y锟斤拷ng)锟斤拷锟斤拷么锟酵稱锟斤拷锟斤拷(y锟斤拷ng)f锟斤拷AB锟斤拷暮锟斤拷锟�(sh锟斤拷)A锟斤拷锟斤拷锟斤拷(sh锟斤拷)B锟斤拷一锟斤拷(g锟斤拷)映锟斤拷锟斤拷記锟斤拷“f(锟斤拷锟斤拷(y锟斤拷ng)锟絇(gu锟斤拷n)系)锟斤拷A(原锟斤拷)B(锟斤拷)”
锟斤拷锟斤拷锟斤拷锟斤拷映锟斤拷f锟斤拷A→B锟斤拷锟絝锟斤拷锟絫锟斤拷(y锟斤拷ng)锟組锟姐：
锟斤拷锟斤拷(1)锟斤拷锟斤拷(sh锟斤拷)A锟叫碉拷每一锟斤拷(g锟斤拷)元锟截ｏ拷锟节猴拷锟斤拷(sh锟斤拷)B锟叫讹拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷唯一锟斤拷;
锟斤拷锟斤拷(2)锟斤拷锟斤拷(sh锟斤拷)A锟叫诧拷同锟斤拷元锟斤拷锟斤拷锟节猴拷锟斤拷(sh锟斤拷)B锟叫岋拷锟斤拷(y锟斤拷ng)锟斤拷锟斤拷锟斤拷锟斤拷锟酵伙拷锟�(g锟斤拷);
锟斤拷锟斤拷(3)锟斤拷要锟襟函旓拷(sh锟斤拷)B锟叫碉拷每一锟斤拷(g锟斤拷)元锟斤拷锟节猴拷锟斤拷(sh锟斤拷)A锟叫讹拷锟斤拷原锟斤拷锟斤拷
锟斤拷锟斤拷6.锟斤拷锟叫旓拷(sh锟斤拷)锟絎(xu锟斤拷)锟斤拷锟斤拷(sh锟斤拷)之锟街段猴拷锟斤拷(sh锟斤拷)
锟斤拷锟斤拷(1)锟节讹拷锟絰锟斤拷牟锟酵拷锟斤拷锟斤拷锟斤拷胁锟酵拷慕锟斤拷锟斤拷锟斤拷_(d锟斤拷)式锟侥猴拷锟斤拷(sh锟斤拷)锟斤拷
锟斤拷锟斤拷(2)锟斤拷锟斤拷锟街碉拷锟斤拷變锟斤拷锟斤拷取值锟斤拷r.
锟斤拷锟斤拷(3)锟街段猴拷锟斤拷(sh锟斤拷)锟侥讹拷锟絰锟斤拷锟角革拷锟轿讹拷锟絰锟斤拷慕锟斤拷锟�锟斤拷值锟斤拷锟角革拷锟斤拷值锟斤拷牟锟斤拷锟�.
锟斤拷锟斤拷锟絘(b锟斤拷)锟戒：锟斤拷(f锟斤拷)锟较猴拷锟斤拷(sh锟斤拷)
锟斤拷锟斤拷锟斤拷锟統=f(u)(u∈M),u=g(x)(x∈A),锟絫y=f[g(x)]=F(x)(x∈A)锟絈锟斤拷f锟斤拷g锟侥忥拷(f锟斤拷)锟较猴拷锟斤拷(sh锟斤拷)锟斤拷
