新高考數(shù)學一輪復習百題刷過關專題33 參變分離解決導數(shù)必刷100題(原卷版)_第1頁
新高考數(shù)學一輪復習百題刷過關專題33 參變分離解決導數(shù)必刷100題(原卷版)_第2頁
新高考數(shù)學一輪復習百題刷過關專題33 參變分離解決導數(shù)必刷100題(原卷版)_第3頁
新高考數(shù)學一輪復習百題刷過關專題33 參變分離解決導數(shù)必刷100題(原卷版)_第4頁
新高考數(shù)學一輪復習百題刷過關專題33 參變分離解決導數(shù)必刷100題(原卷版)_第5頁
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專題33參變分離解決導數(shù)必刷100題一、單選題1.已知函數(shù)SKIPIF1<0,若SKIPIF1<0恒成立,則實數(shù)SKIPIF1<0的取值范圍().A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<02.已知函數(shù)SKIPIF1<0,若SKIPIF1<0,使得SKIPIF1<0在SKIPIF1<0恒成立,則SKIPIF1<0的最大值為()A.2 B.3 C.4 D.53.已知函數(shù)SKIPIF1<0為增函數(shù),則SKIPIF1<0的取值范圍是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<04.已知函數(shù)SKIPIF1<0,SKIPIF1<0,當SKIPIF1<0時,不等式SKIPIF1<0恒成立,則實數(shù)SKIPIF1<0的取值范圍為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<05.若關于SKIPIF1<0的方程SKIPIF1<0在SKIPIF1<0上有兩個不等的實數(shù)根,則實數(shù)SKIPIF1<0的取值范圍為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<06.已知函數(shù)SKIPIF1<0與函數(shù)SKIPIF1<0的圖像上恰有兩對關于x軸對稱的點,則實數(shù)a的取值范圍為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<07.已知函數(shù)SKIPIF1<0函數(shù)SKIPIF1<0存在零點,則實數(shù)SKIPIF1<0的取值范圍()A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<08.已知SKIPIF1<0在區(qū)間SKIPIF1<0上單調(diào)遞增,則實數(shù)SKIPIF1<0的取值范圍是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<09.已知函數(shù)SKIPIF1<0在SKIPIF1<0上有兩個零點,則實數(shù)a的最大值為()A.SKIPIF1<0 B.1 C.SKIPIF1<0 D.SKIPIF1<010.已知a為常數(shù),若曲線y=ax2+3x?lnx存在與直線x+y?1=0垂直的切線,則實數(shù)a的取值范圍是()A.SKIPIF1<0 B.SKIPIF1<0C.[?1,+∞) D.(?∞,?1]11.已知函數(shù)SKIPIF1<0,若存在SKIPIF1<0,使得SKIPIF1<0,則實數(shù)a的取值范圍為:()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<012.已知函數(shù)SKIPIF1<0(SKIPIF1<0)有三個不同的零點,則實數(shù)SKIPIF1<0的取值范圍是()A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<013.設SKIPIF1<0,SKIPIF1<0在SKIPIF1<0上有3個根,則實數(shù)SKIPIF1<0的取值范圍是()A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<014.已知函數(shù)SKIPIF1<0,SKIPIF1<0,若SKIPIF1<0,且SKIPIF1<0對任意SKIPIF1<0恒成立,則SKIPIF1<0的最大值為()A.2 B.3 C.4 D.515.當SKIPIF1<0時,不等式SKIPIF1<0恒成立,則實數(shù)SKIPIF1<0的取值范圍是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<016.已知SKIPIF1<0,SKIPIF1<0若對任意SKIPIF1<0,不等式SKIPIF1<0恒成立,則實數(shù)a的取值范圍是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<017.若函數(shù)SKIPIF1<0在SKIPIF1<0上單調(diào)遞增,則實數(shù)SKIPIF1<0的取值范圍是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<018.設函數(shù)SKIPIF1<0在SKIPIF1<0上有兩個零點,則實數(shù)a的取值范圍()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<019.已知關于x的方程SKIPIF1<0在SKIPIF1<0上有兩解,則實數(shù)k的取值范圍為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<020.函數(shù)SKIPIF1<0在SKIPIF1<0上有兩個零點,則實數(shù)SKIPIF1<0的取值范圍是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<021.已知SKIPIF1<0對任意正數(shù)SKIPIF1<0恒成立,則實數(shù)SKIPIF1<0的最大值為()A.SKIPIF1<0 B.1 C.2 D.SKIPIF1<022.已知SKIPIF1<0是自然對數(shù)的底數(shù),當SKIPIF1<0時,若關于SKIPIF1<0的不等式SKIPIF1<0的解集非空,則實數(shù)SKIPIF1<0的取值范圍為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<023.已知函數(shù)SKIPIF1<0的圖象在SKIPIF1<0處的切線與直線SKIPIF1<0垂直,若對任意的SKIPIF1<0,不等式SKIPIF1<0恒成立,則實數(shù)SKIPIF1<0的最大值為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<024.已知函數(shù)SKIPIF1<0,若當SKIPIF1<0時,SKIPIF1<0有解,則實數(shù)SKIPIF1<0的取值范圍為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<025.已知不等式SKIPIF1<0對SKIPIF1<0恒成立,則SKIPIF1<0取值范圍為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0第II卷(非選擇題)二、填空題26.已知函數(shù)SKIPIF1<0,SKIPIF1<0,若關于SKIPIF1<0的不等式SKIPIF1<0在SKIPIF1<0上恒成立,則實數(shù)SKIPIF1<0的取值范圍是______.27.若函數(shù)SKIPIF1<0在SKIPIF1<0上有兩個不同的零點,則實數(shù)SKIPIF1<0的取值范圍為___________.28.已知函數(shù)SKIPIF1<0在SKIPIF1<0上有兩個零點,則實數(shù)SKIPIF1<0的取值范圍__________.29.已知函數(shù)SKIPIF1<0,若不等式SKIPIF1<0有解,則整數(shù)SKIPIF1<0的最小值為________.30.已知函數(shù)SKIPIF1<0,若不等式SKIPIF1<0對任意SKIPIF1<0恒成立,則實數(shù)a的取值范圍是____________.31.已知SKIPIF1<0,若關于SKIPIF1<0的不等式SKIPIF1<0恒成立,則實數(shù)SKIPIF1<0的取值范圍是________.32.已知函數(shù)SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,若對任意的SKIPIF1<0,SKIPIF1<0,當SKIPIF1<0時,SKIPIF1<0恒成立,則實數(shù)SKIPIF1<0的最大值為______.33.定義在R上的函數(shù)SKIPIF1<0,若存在實數(shù)x使不等式SKIPIF1<0對任意SKIPIF1<0恒成立,則實數(shù)a的取值范圍為______________.34.已知關于SKIPIF1<0的不等式SKIPIF1<0恒成立,則實數(shù)SKIPIF1<0的取值范圍是___________.35.已知函數(shù)SKIPIF1<0,SKIPIF1<0對一切SKIPIF1<0,SKIPIF1<0恒成立,則SKIPIF1<0的取值范圍是________.36.已知函數(shù)f(x)=x2-2lnx,若關于x的不等式f(x)-m≥0在[1,e]上有實數(shù)解,則實數(shù)m的取值范圍是________.37.已知函數(shù)SKIPIF1<0,若對任意的SKIPIF1<0,SKIPIF1<0恒成立,求實數(shù)SKIPIF1<0的取值范圍______.38.若存在SKIPIF1<0使得當SKIPIF1<0時,函數(shù)SKIPIF1<0的圖象始終在SKIPIF1<0軸下方,則實數(shù)SKIPIF1<0的取值范圍是_______________.39.當SKIPIF1<0時,SKIPIF1<0恒成立,則SKIPIF1<0的取值范圍為____________.40.關于SKIPIF1<0不等式SKIPIF1<0恰有一個整數(shù)解,則實數(shù)SKIPIF1<0的取值范圍是__________.41.已知函數(shù)SKIPIF1<0,若對SKIPIF1<0,不等式SKIPIF1<0恒成立,則實數(shù)SKIPIF1<0的取值范圍___________.42.已知函數(shù)SKIPIF1<0(SKIPIF1<0).若存在SKIPIF1<0,使得SKIPIF1<0成立,則實數(shù)a的取值范圍是______.43.已知函數(shù)SKIPIF1<0,SKIPIF1<0.若SKIPIF1<0,不等式SKIPIF1<0恒成立,則SKIPIF1<0的取值范圍是______.44.若對SKIPIF1<0,不等式SKIPIF1<0恒成立,則實數(shù)SKIPIF1<0的最大值為______.45.當SKIPIF1<0時,不等式SKIPIF1<0恒成立,則實數(shù)k的取值范圍是__.46.已知函數(shù)SKIPIF1<0,存在實數(shù)SKIPIF1<0,使SKIPIF1<0的圖象與SKIPIF1<0的圖象無公共點,則實數(shù)b的取值范圍為__________.47.不等式SKIPIF1<0對于定義域內(nèi)的任意SKIPIF1<0恒成立,則SKIPIF1<0的取值范圍為__________.48.已知不等式SKIPIF1<0對SKIPIF1<0恒成立,則實數(shù)m的最小值為__________.49.若SKIPIF1<0時,關于SKIPIF1<0不等式SKIPIF1<0恒成立,則實數(shù)SKIPIF1<0的最大值是______.50.已知函數(shù)SKIPIF1<0滿足SKIPIF1<0恒成立,則實數(shù)SKIPIF1<0的取值范圍是____.三、解答題51.已知函數(shù)SKIPIF1<0.(Ⅰ)當SKIPIF1<0時,求函數(shù)SKIPIF1<0的極值;(Ⅱ)討論函數(shù)SKIPIF1<0的單調(diào)性;(Ⅲ)令SKIPIF1<0,若對任意的SKIPIF1<0,SKIPIF1<0,恒有SKIPIF1<0成立,求實數(shù)k的最大整數(shù).52.已知函數(shù)SKIPIF1<0.(1)當SKIPIF1<0時,求函數(shù)SKIPIF1<0的單調(diào)區(qū)間;(2)若函數(shù)SKIPIF1<0在區(qū)間SKIPIF1<0上為減函數(shù),求實數(shù)SKIPIF1<0的取值范圍.53.已知函數(shù)SKIPIF1<0的圖象在點SKIPIF1<0處的切線與直線SKIPIF1<0平行.(1)若函數(shù)SKIPIF1<0在[e,2e]上是減函數(shù),求實數(shù)a的最小值;(2)設SKIPIF1<0,若存在SKIPIF1<0∈[e,e2],使SKIPIF1<0成立,求實數(shù)a的取值范圍.54.設函數(shù)SKIPIF1<0.(1)討論函數(shù)SKIPIF1<0的單調(diào)性;(2)若函數(shù)SKIPIF1<0在SKIPIF1<0時恒成立,求實數(shù)SKIPIF1<0的取值范圍;55.已知函數(shù)SKIPIF1<0.(1)討論函數(shù)SKIPIF1<0的單調(diào)性;(2)設SKIPIF1<0,當SKIPIF1<0時,SKIPIF1<0,實數(shù)SKIPIF1<0的取值范圍.56.已知函數(shù)SKIPIF1<0,SKIPIF1<0.(1)若曲線SKIPIF1<0在SKIPIF1<0處的切線與直線SKIPIF1<0垂直,求實數(shù)SKIPIF1<0的值;(2)設SKIPIF1<0,若對任意兩個不等的正數(shù)SKIPIF1<0,SKIPIF1<0,都有SKIPIF1<0恒成立,求實數(shù)SKIPIF1<0的取值范圍;(3)若SKIPIF1<0上存在一點SKIPIF1<0,使得SKIPIF1<0成立,求實數(shù)SKIPIF1<0的取值范圍.57.已知函數(shù)SKIPIF1<0,SKIPIF1<0.(1)求函數(shù)SKIPIF1<0在SKIPIF1<0處的切線方程;(2)若實數(shù)SKIPIF1<0為整數(shù),且對任意的SKIPIF1<0時,都有SKIPIF1<0恒成立,求實數(shù)SKIPIF1<0的最小值.58.已知函數(shù)SKIPIF1<0.(1)當SKIPIF1<0時,求SKIPIF1<0的極值;(2)若對任意SKIPIF1<0,都有SKIPIF1<0恒成立,求整數(shù)a的最大值.59.設函數(shù)SKIPIF1<0,(I)求函數(shù)SKIPIF1<0的單調(diào)區(qū)間;(Ⅱ)設對于任意SKIPIF1<0,且SKIPIF1<0,都有SKIPIF1<0恒成立,求實數(shù)SKIPIF1<0的取值范圍.60.已知函數(shù)SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,若函數(shù)SKIPIF1<0的最小值為SKIPIF1<0(SKIPIF1<0為自然對數(shù)的底數(shù)).(1)求實數(shù)SKIPIF1<0的值;(2)方程SKIPIF1<0在SKIPIF1<0有解,求SKIPIF1<0的取值范圍.61.已知函數(shù)SKIPIF1<0,SKIPIF1<0.(1)若函數(shù)SKIPIF1<0在SKIPIF1<0處的切線恰好與直線SKIPIF1<0垂直,求實數(shù)SKIPIF1<0的值;(2)討論SKIPIF1<0的單調(diào)性;(3)若函數(shù)SKIPIF1<0存在極值,SKIPIF1<0在SKIPIF1<0上恒成立時,求實數(shù)SKIPIF1<0的取值范圍.62.已知函數(shù)SKIPIF1<0.(1)若函數(shù)SKIPIF1<0在SKIPIF1<0處取得極值,求SKIPIF1<0的值并確定SKIPIF1<0在SKIPIF1<0處是取得極大值還是極小值﹔(2)若SKIPIF1<0對SKIPIF1<0恒成立,求SKIPIF1<0的取值范圍.63.已知函數(shù)SKIPIF1<0(SKIPIF1<0).(1)若SKIPIF1<0,討論函數(shù)SKIPIF1<0的單調(diào)性;(2)設函數(shù)SKIPIF1<0,若至少存在一個SKIPIF1<0,使得SKIPIF1<0成立,求實數(shù)SKIPIF1<0的取值范圍.64.已知函數(shù)SKIPIF1<0.(1)當SKIPIF1<0時,證明:SKIPIF1<0;(2)若SKIPIF1<0在SKIPIF1<0上單調(diào)遞增,求實數(shù)SKIPIF1<0的取值范圍.65.已知函數(shù)SKIPIF1<0,其中SKIPIF1<0.(1)當SKIPIF1<0時,求SKIPIF1<0的單調(diào)區(qū)間;(2)若SKIPIF1<0在SKIPIF1<0內(nèi)有極值,試判斷極值點的個數(shù)并求SKIPIF1<0的取值范圍.66.已知函數(shù)SKIPIF1<0,SKIPIF1<0.(1)若SKIPIF1<0在SKIPIF1<0處取得極值,求SKIPIF1<0的值;(2)若SKIPIF1<0在區(qū)間SKIPIF1<0上單調(diào)遞增,求SKIPIF1<0的取值范圍;(3)若函數(shù)SKIPIF1<0有一個零點,求SKIPIF1<0的取值范圍.67.已知函數(shù)SKIPIF1<0,SKIPIF1<0(其中e為自然對數(shù)的底數(shù)).(1)當SKIPIF1<0時,討論函數(shù)SKIPIF1<0的單調(diào)性;(2)當SKIPIF1<0時,若不等式SKIPIF1<0恒成立,求實數(shù)SKIPIF1<0的取值范圍.68.已知函數(shù)SKIPIF1<0,SKIPIF1<0.(1)若SKIPIF1<0在SKIPIF1<0處的切線為SKIPIF1<0,求SKIPIF1<0的值;(2)若存在SKIPIF1<0,使得SKIPIF1<0,求實數(shù)SKIPIF1<0的取值范圍.69.已知函數(shù)SKIPIF1<0.(1)求SKIPIF1<0的最小值;(2)若不等式SKIPIF1<0對任意的SKIPIF1<0恒成立,求實數(shù)SKIPIF1<0的取值范圍.70.設函數(shù)SKIPIF1<0.(1)討論SKIPIF1<0的單調(diào)性;(2)若SKIPIF1<0存在極值,對于任意SKIPIF1<0,都有SKIPIF1<0恒成立,求SKIPIF1<0的取值范圍.71.設函數(shù)SKIPIF1<0.(1)當SKIPIF1<0時,求函數(shù)SKIPIF1<0的最大值;(2)令SKIPIF1<0,(SKIPIF1<0)其圖象上任意一點SKIPIF1<0處切線的斜率SKIPIF1<0恒成立,求實數(shù)SKIPIF1<0的取值范圍;(3)當SKIPIF1<0,SKIPIF1<0,方程SKIPIF1<0有唯一實數(shù)解,求正數(shù)SKIPIF1<0的值.72.已知函數(shù)SKIPIF1<0.(1)求SKIPIF1<0的解析式及單調(diào)區(qū)間;(2)若存在實數(shù)SKIPIF1<0,使得SKIPIF1<0成立,求整數(shù)SKIPIF1<0的最小值.73.已知函數(shù)SKIPIF1<0的圖象在點SKIPIF1<0處的切線方程為SKIPIF1<0.(本題可能用的數(shù)據(jù):SKIPIF1<0,SKIPIF1<0是自然對數(shù)的底數(shù))(1)求函數(shù)SKIPIF1<0的解析式;(2)若對任意SKIPIF1<0,不等式SKIPIF1<0恒成立,求整數(shù)t的最大值.74.已知函數(shù)SKIPIF1<0,且SKIPIF1<0恒成立.(1)求實數(shù)SKIPIF1<0的值;(2)記SKIPIF1<0,若SKIPIF1<0,且當SKIPIF1<0時,不等式SKIPIF1<0恒成立,求SKIPIF1<0的最大值.75.已知函數(shù)SKIPIF1<0.(1)若函數(shù)SKIPIF1<0在區(qū)間SKIPIF1<0上為增函數(shù),求SKIPIF1<0的取值范圍;(2)當SKIPIF1<0且SKIPIF1<0時,不等式SKIPIF1<0在SKIPIF1<0上恒成立,求SKIPIF1<0的最大值.76.已知函數(shù)SKIPIF1<0,SKIPIF1<0.(1)討論函數(shù)SKIPIF1<0的單調(diào)性;(2)當SKIPIF1<0時,不等式SKIPIF1<0恒成立,求SKIPIF1<0的取值范圍.77.已知函數(shù)SKIPIF1<0,SKIPIF1<0.(1)當SKIPIF1<0時,討論函數(shù)SKIPIF1<0的單調(diào)性;(2)當SKIPIF1<0時,對任意的SKIPIF1<0,不等式SKIPIF1<0恒成立,求實數(shù)SKIPIF1<0的取值范圍.78.已知函數(shù)SKIPIF1<0.(1)證明:當SKIPIF1<0時,SKIPIF1<0無零點;(2)若SKIPIF1<0恒成立,求實數(shù)SKIPIF1<0的取值范圍.79.已知函數(shù)SKIPIF1<0.(1)當SKIPIF1<0時,求曲線SKIPIF1<0在SKIPIF1<0上的單調(diào)區(qū)間;(2)若SKIPIF1<0對SKIPIF1<0恒成立,求實數(shù)m的取值范圍.80.已知函數(shù)SKIPIF1<0(1)若SKIPIF1<0,求SKIPIF1<0的極值;(2)若SKIPIF1<0恒成立,求實數(shù)a的取值范圍.81.已知函數(shù)SKIPIF1<0(SKIPIF1<0).(Ⅰ)若SKIPIF1<0為整數(shù),且SKIPIF1<0在SKIPIF1<0上恒成立,求SKIPIF1<0的最大值;(Ⅱ)若函數(shù)SKIPIF1<0的兩個極值點分別為SKIPIF1<0,SKIPIF1<0,且SKIPIF1<0,證明:SKIPIF1<0.82.已知函數(shù)SKIPIF1<0.(1)若SKIPIF1<0,證明SKIPIF1<0;(2)若對任意SKIPIF1<0,SKIPIF1<0,都有SKIPIF1<0,求實數(shù)a的取值范圍.83.已知函數(shù)SKIPIF1<0,其中SKIPIF1<0為自然對數(shù)的底數(shù).(1)求函數(shù)SKIPIF1<0的最小值;(2)若不等式SKIPIF1<0對于任意SKIPIF1<0恒成立,求實數(shù)SKIPIF1<0的取值范圍.84.已知函數(shù)SKIPIF1<0.(1)當SKIPIF1<0時,討論SKIPIF1<0的單調(diào)性;(2)若曲線SKIPIF1<0與直線SKIPIF1<0有交點,求證:SKIPIF1<0.85.已知函數(shù)SKIPIF1<0.(I)當SKIPIF1<0時,討論函數(shù)SKIPIF1<0在SKIPIF1<0上的單調(diào)性;(II)若SKIPIF1<0恒成立,求實數(shù)SKIPIF1<0的取值范圍.86.已知函數(shù)SKIPIF1<0(SKIPIF1<0,e為自然對數(shù)的底數(shù)),SKIPIF1<0.(1)若SKIPIF1<0,求函數(shù)SKIPIF1<0在SKIPIF1<0處的切線方程;(2)若函數(shù)SKIPIF1<0存在零點,求實數(shù)a的最小值;(3)若函數(shù)的SKIPIF1<0最小值為2,求實數(shù)a的取值范圍.87.已知函數(shù)SKIPIF1<0,SKIPIF1<0為自然對數(shù)的底數(shù),SKIPIF1<0.(1)討論SKIPIF1<0的單調(diào)性;(2)若SKIPIF1<0,且SKIPIF1<0,求整數(shù)SKIPIF1<0的最大值.88.已知SKIPIF1<0.(1)若SKIPIF1<0,求SKIPIF1<0的單調(diào)區(qū)間;(2)已知函數(shù)SKIPIF1<0有兩個極值點SKIPIF1<0(SKIPIF1<0),若SKIPIF1<0恒成立,試求SKIPIF1<0的取值范圍.89.已知函數(shù)SKIPIF1<0.(1)若SKIPIF1<0存在極值,求SKIPIF1<0的取值范圍.(2)當SKIPIF1<0時,證明:SKIPIF1<0.90.設函數(shù)SKIPIF1<0.(1)若函數(shù)SKIPIF1<0在定義域內(nèi)是單調(diào)遞增函數(shù),求實數(shù)SKIPIF1<0的取值范圍;(2)若SKIPIF1<0,則(i)證明:方程SKIPIF1<0在SKIPIF1<0內(nèi)存在唯一的根;(ii)設函數(shù)SKIPIF1<0表示SKIPIF1<0中的較小值),求SKIPIF1<0的最大值.91.已知函數(shù)SKIPIF1<0.(1)判斷函數(shù)SKIPIF1<0的單調(diào)性;(2)若SKIPIF1<0在SKIPIF1<0上恒成立,求SKIPIF1<0的取值范圍.92.已知函數(shù)SKIPIF1<0.(1)若函數(shù)SKIPIF1<0和直線SKIPIF1<0相切,求b的值:(2)令SKIPIF1<0,當SKIPIF1<0時,判斷SKIPIF1<0零點的個數(shù)并證明.93.已知函數(shù)SKIPIF1<0,SKIPIF1<0

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