锟斤拷锟斤拷锟斤拷锟紸知锟絉锟斤拷锟�

锟斤拷锟斤拷锟斤拷锟絚一映锟斤拷母锟斤拷锟�

锟斤拷锟斤拷1锟斤拷锟剿解對锟斤拷锟斤拷千锟斤拷锟斤拷膶锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟街別锟角ｏ拷一锟斤拷一锟斤拷锟斤拷一一锟斤拷锟斤拷锟斤拷锟斤拷锟�

锟斤拷锟斤拷2锟斤拷映锟戒：锟絆A锟斤拷B锟角兩傦拷锟角空硷拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟侥筹拷N锟斤拷锟斤拷锟絇系f锟斤拷锟斤拷锟节硷拷锟斤拷A锟叫碉拷锟斤拷锟斤拷一锟斤拷元锟斤拷x锟斤拷锟节硷拷锟斤拷B锟叫讹拷锟斤拷锟斤拷唯一锟斤拷一锟斤拷元锟斤拷y锟絚之锟斤拷锟斤拷锟斤拷锟斤拷么锟斤拷锟酵稱锟斤拷锟斤拷f锟斤拷A→B锟介集锟斤拷A锟斤拷锟斤拷锟斤拷B锟斤拷一锟斤拷映锟斤拷(mapping).映锟斤拷锟斤拷锟斤拷锟斤拷膶锟斤拷锟�锟斤拷锟斤拷锟絈“锟斤拷一”锟侥岋拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷一锟斤拷一锟斤拷锟斤拷一

锟斤拷锟斤拷锟斤拷锟絚锟斤拷锟斤拷锟斤拷(sh锟斤拷)锟侥革拷锟斤拷

锟斤拷锟斤拷1锟斤拷锟斤拷锟斤拷(sh锟斤拷)锟斤拷锟絆A锟斤拷B锟角兩傦拷锟角空的旓拷(sh锟斤拷)锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟侥筹拷N锟絖锟斤拷锟侥岋拷锟斤拷锟絇系f锟斤拷锟斤拷锟节硷拷锟斤拷A锟叫碉拷锟斤拷锟斤拷一锟斤拷锟斤拷(sh锟斤拷)x锟斤拷锟节硷拷锟斤拷B锟叫讹拷锟斤拷锟斤拷唯一锟絖锟斤拷锟侥旓拷(sh锟斤拷)y锟絚之锟斤拷锟斤拷锟斤拷锟斤拷么锟斤拷锟酵稱锟斤拷锟斤拷f锟斤拷A→B锟介集锟斤拷A锟斤拷锟斤拷锟斤拷B锟斤拷一锟斤拷锟斤拷锟斤拷(sh锟斤拷)锟斤拷記锟斤拷y=f(x),xA.锟斤拷锟斤拷x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锟叫猴拷锟斤拷(sh锟斤拷)锟侥讹拷锟絰锟斤拷锟斤拷锟絚x锟斤拷值锟斤拷锟斤拷锟斤拷锟斤拷y锟斤拷值锟斤拷锟斤拷(sh锟斤拷)值锟斤拷锟斤拷锟斤拷(sh锟斤拷)值锟侥硷拷锟较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锟斤拷(sh锟斤拷)锟斤拷锟斤拷锟斤拷锟接筹拷洌�锟角非空旓拷(sh锟斤拷)锟斤拷A锟斤拷锟角空旓拷(sh锟斤拷)锟斤拷B锟斤拷映锟斤拷锟斤拷

锟斤拷锟斤拷2锟斤拷锟斤拷锟斤拷(sh锟斤拷)锟斤拷锟斤拷要锟截ｏ拷锟斤拷锟絰锟斤拷锟斤拷值锟斤拷锟斤拷锟斤拷锟斤拷锟絇系锟斤拷锟紷锟斤拷锟叫旓拷锟缴傦拷锟斤拷锟斤拷(sh锟斤拷)锟角凤拷锟酵�一锟斤拷锟斤拷(sh锟斤拷)锟斤拷锟斤拷锟斤拷(j锟斤拷)锟斤拷

锟斤拷锟斤拷3锟斤拷锟絕(q锟斤拷)锟絞锟侥革拷锟筋：锟絆a,bR,锟斤拷a<b.锟揭傦拷規(gu锟斤拷)锟斤拷锟斤拷

锟斤拷锟�锟斤拷锟�(a,b)={x|a<x<b}锟斤拷[a,b]={x|a≤x≤b}锟斤拷[a,b)={x|a≤x<b}锟斤拷(a,b]={x|a<x≤b}

锟斤拷锟�锟斤拷锟�(a,+∞)={x|x>a}锟斤拷[a,+∞)={x|x≥a}锟斤拷(-∞,b)={x|x<b}锟斤拷(-∞,b]={x|x≤b}锟斤拷(-∞,+∞)=R

锟斤拷锟斤拷锟斤拷锟絚锟斤拷锟斤拷锟斤拷(sh锟斤拷)锟侥憋拷示锟斤拷锟斤拷

锟斤拷锟斤拷1锟斤拷锟斤拷锟斤拷(sh锟斤拷)锟斤拷锟斤拷锟絅锟斤拷示锟斤拷锟斤拷锟叫憋拷锟斤拷锟紻锟襟法斤拷锟斤拷锟斤拷

锟斤拷锟斤拷2锟斤拷锟街段猴拷锟斤拷(sh锟斤拷)锟斤拷锟斤拷锟絰锟斤拷牟锟酵�锟斤拷锟街ｏ拷锟叫诧拷同锟侥岋拷锟斤拷锟斤拷锟絫锟侥猴拷锟斤拷(sh锟斤拷)锟斤拷注锟斤拷锟斤拷c锟斤拷锟劫分段猴拷锟斤拷(sh锟斤拷)锟斤拷一锟斤拷锟斤拷锟斤拷(sh锟斤拷)锟斤拷锟斤拷要锟絗锟絁锟斤拷锟角幾傦拷锟斤拷锟斤拷(sh锟斤拷)锟斤拷锟节分段猴拷锟斤拷(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牟锟斤拷锟斤拷锟街碉拷锟斤拷歉锟斤拷锟街碉拷锟侥诧拷锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷知锟絉锟斤拷锟�

锟斤拷锟斤拷锟斤拷锟絚一锟斤拷锟絰锟斤拷膸追N锟斤拷r

锟斤拷锟斤拷锟斤拷锟斤拷f(x)锟斤拷锟斤拷式锟斤拷锟絫锟斤拷锟斤拷(sh锟斤拷)锟侥讹拷锟絰锟斤拷锟角岋拷锟斤拷(sh锟斤拷)锟斤拷R锟斤拷

锟斤拷锟�锟斤拷锟斤拷锟絝(x)锟角凤拷式锟斤拷锟絫锟斤拷锟斤拷(sh锟斤拷)锟侥讹拷锟絰锟斤拷锟斤拷使锟斤拷母锟斤拷锟斤拷锟斤拷0锟侥岋拷锟斤拷(sh锟斤拷)锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷f(x)锟角讹拷锟轿革拷式锟斤拷锟絫锟斤拷锟斤拷(sh锟斤拷)锟侥讹拷锟絰锟斤拷锟斤拷使锟斤拷號锟饺碉拷式锟接达拷锟节伙拷锟斤拷锟�0锟侥岋拷锟斤拷(sh锟斤拷)锟斤拷锟斤拷锟斤拷

锟斤拷锟�锟斤拷锟斤拷锟絝(x)锟角岋拷锟斤拷(sh锟斤拷)锟斤拷锟斤拷(sh锟斤拷)锟斤拷锟芥數(sh锟斤拷)锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷.锟斤拷锟斤拷锟斤拷锟斤拷蝺锟絔锟斤拷锟斤拷锟絰锟斤拷锟斤拷锟皆底旓拷(sh锟斤拷)锟斤拷指锟斤拷(sh锟斤拷)锟斤拷锟斤拷同锟絩锟斤拷锟姐。

锟斤拷锟�锟斤拷锟斤拷锟絝(x)锟斤拷锟缴幾傦拷锟斤拷锟街的旓拷(sh锟斤拷)锟絎式锟接橈拷锟缴的ｏ拷锟絫锟斤拷锟斤拷(sh锟斤拷)锟侥讹拷锟絰锟斤拷锟斤拷使锟斤拷锟斤拷锟斤拷式锟接讹拷锟斤拷锟斤拷锟絰锟侥岋拷锟斤拷(sh锟斤拷)锟斤拷锟斤拷锟斤拷

锟斤拷锟�锟斤拷锟斤拷锟絝(x)锟斤拷锟缴岋拷锟紿锟斤拷锟絵锟斤拷锟斤拷锟斤拷锟斤拷暮锟斤拷锟�(sh锟斤拷)锟斤拷锟絫锟斤拷锟斤拷(sh锟斤拷)锟侥讹拷锟絰锟津應凤拷锟较岋拷锟紿锟斤拷锟絵

請锟斤拷锟絛锟斤拷锟斤拷锟斤拷

锟斤拷一锟斤拷(sh锟斤拷)锟絎锟斤拷锟斤拷锟斤拷(sh锟斤拷)锟斤拷锟斤拷锟绞撅拷锟街�锟絉锟斤拷锟斤拷

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