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第07講函數(shù)的基本性質(zhì)Ⅰ-單調(diào)性與最值(精練)【A組

】一、單選題1.在下列四個(gè)函數(shù)中,在SKIPIF1<0上為增函數(shù)的是(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<02.函數(shù)SKIPIF1<0在區(qū)間SKIPIF1<0上的最大值為(

)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<03.設(shè)函數(shù)SKIPIF1<0,若SKIPIF1<0,則實(shí)數(shù)SKIPIF1<0的取值范圍是(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<04.已知SKIPIF1<0,則“SKIPIF1<0”是“函數(shù)SKIPIF1<0在SKIPIF1<0內(nèi)單調(diào)遞減”的(

)A.充分不必要條件 B.必要不充分條件C.充要條件 D.既不充分也不必要條件5.若對(duì)任意的SKIPIF1<0,SKIPIF1<0恒成立,則m的取值范圍是(

)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<06.已知函數(shù)SKIPIF1<0的最小值為a,則函數(shù)SKIPIF1<0的最小值為(

)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<07.已知函數(shù)SKIPIF1<0在SKIPIF1<0上單調(diào)遞增,則實(shí)數(shù)SKIPIF1<0的取值范圍是(

)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<08.若偶函數(shù)SKIPIF1<0在SKIPIF1<0上單調(diào)遞增,且SKIPIF1<0,則不等式SKIPIF1<0解集是(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<0二、多選題9.已知函數(shù)SKIPIF1<0則下列結(jié)論正確的是(

)A.f(x)的定義域是SKIPIF1<0,值域是SKIPIF1<0B.f(x)的單調(diào)減區(qū)間是(1,3)C.f(x)的定義域是SKIPIF1<0,值域是SKIPIF1<0D.f(x)的單調(diào)增區(qū)間是(-∞,1)10.若二次函數(shù)SKIPIF1<0在區(qū)間SKIPIF1<0上是增函數(shù),則a可以是(

)A.SKIPIF1<0 B.0 C.1 D.211.已知定義在SKIPIF1<0上的函數(shù)SKIPIF1<0的圖象是連續(xù)不斷的,且滿足以下條件:①SKIPIF1<0,SKIPIF1<0;②SKIPIF1<0,當(dāng)SKIPIF1<0時(shí),SKIPIF1<0;③SKIPIF1<0.則下列選項(xiàng)成立的是(

)A.SKIPIF1<0B.若SKIPIF1<0,則SKIPIF1<0或SKIPIF1<0C.若SKIPIF1<0,則SKIPIF1<0D.SKIPIF1<0,使得SKIPIF1<0三、填空題12.函數(shù)SKIPIF1<0在SKIPIF1<0上的值域?yàn)開_______.13.函數(shù)SKIPIF1<0的單調(diào)遞增區(qū)間為__.14.定義在SKIPIF1<0上的函數(shù)SKIPIF1<0滿足SKIPIF1<0,SKIPIF1<0,若SKIPIF1<0,則m的取值范圍是______.15.若函數(shù)SKIPIF1<0在區(qū)間SKIPIF1<0上單調(diào)遞減,則實(shí)數(shù)a的取值范圍是________.四、解答題16.函數(shù)SKIPIF1<0,SKIPIF1<0(1)判斷單調(diào)性并證明,(2)求最大值和最小值17.已知函數(shù)SKIPIF1<0是定義在SKIPIF1<0上的奇函數(shù),當(dāng)SKIPIF1<0時(shí),SKIPIF1<0.(1)求SKIPIF1<0.(2)求函數(shù)SKIPIF1<0的解析式.(3)若SKIPIF1<0,求實(shí)數(shù)a的取值范圍.【B組

】一、單選題1.若1≤x≤2時(shí),不等式SKIPIF1<0恒成立,則實(shí)數(shù)m的最小值為(

)A.0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<02.函數(shù)SKIPIF1<0的單調(diào)遞增區(qū)間是()A.SKIPIF1<0 B.[2,+∞)C.SKIPIF1<0 D.SKIPIF1<03.定義在R上的奇函數(shù)SKIPIF1<0,滿足SKIPIF1<0,且在SKIPIF1<0上單調(diào)遞減,則不等式SKIPIF1<0的解集為(

)A.SKIPIF1<0或SKIPIF1<0 B.SKIPIF1<0或SKIPIF1<0C.SKIPIF1<0或SKIPIF1<0 D.SKIPIF1<0或SKIPIF1<04.函數(shù)SKIPIF1<0,SKIPIF1<0,對(duì)SKIPIF1<0,SKIPIF1<0,使SKIPIF1<0成立,則a的取值范圍是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0二、多選題5.設(shè)SKIPIF1<0是定義在SKIPIF1<0上的奇函數(shù),且SKIPIF1<0在SKIPIF1<0上單調(diào)遞減,SKIPIF1<0,則(

)A.SKIPIF1<0在SKIPIF1<0上單調(diào)遞減B.SKIPIF1<0C.不等式SKIPIF1<0的解集為SKIPIF1<0D.SKIPIF1<0的圖象與SKIPIF1<0軸只有2個(gè)交點(diǎn)6.已知函數(shù)SKIPIF1<0,以下結(jié)論正確的是(

)A.SKIPIF1<0為奇函數(shù)B.對(duì)任意的SKIPIF1<0都有SKIPIF1<0C.對(duì)任意的SKIPIF1<0都有SKIPIF1<0D.SKIPIF1<0的值域是SKIPIF1<0三、填空題7.因函數(shù)SKIPIF1<0的圖像形狀像對(duì)勾,我們稱形如“SKIPIF1<0”的函數(shù)為“對(duì)勾函數(shù)”.該函數(shù)具有性質(zhì):在SKIPIF1<0上是減函數(shù),在SKIPIF1<0上是增函數(shù),若對(duì)勾函數(shù)SKIPIF1<0對(duì)于任意的SKIPIF1<0,都有SKIPIF1<0,則實(shí)數(shù)t的最大值為__________.四、解答題9.已知函數(shù)SKIPIF1<0,其中SKIPIF1<0.(1)討論函數(shù)SKIPIF1<0的奇偶性:(2)若函數(shù)在區(qū)間SKIPIF1<0上是嚴(yán)格增函數(shù),求實(shí)數(shù)a的取值范圍.10.已知定義域?yàn)镽的函數(shù)SKIPIF1<0是奇函數(shù).(1)求a的值;(2)判斷SKIPIF1<0的單調(diào)性,并證明;(3)若關(guān)于m的不等式SKIPIF1<0在SKIPIF1<0上有解,求實(shí)數(shù)t的取值范圍.【C組

在創(chuàng)新中考查思維】一、單選題1.已知函數(shù)SKIPIF1<0是定義在SKIPIF1<0上的偶函數(shù),若SKIPIF1<0,SKIPIF1<0,且SKIPIF1<0,都有SKIPIF1<0成立,則不等式SKIPIF1<0的解集為(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<02.已知奇函數(shù)SKIPIF1<0在SKIPIF1<0上單調(diào)遞增,對(duì)SKIPIF1<0,關(guān)于SKIPIF1<0的不等式SKIPIF1<0在SKIPIF1<0上有解,則實(shí)數(shù)SKIPIF1<0的取值范圍為(

)A.SKIPIF1<0或SKIPIF1<0 B.SKIPIF1<0或SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<0或SKIPIF1<03.函數(shù)SKIPIF1<0是定義在SKIPIF1<0上的偶函數(shù),且在SKIPIF1<0上是增函數(shù),若對(duì)任意SKIPIF1<0,均有SKIPIF1<0,則實(shí)數(shù)t的最大值是(

)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.3二、多選題4.已知SKIPIF1<0是定義在區(qū)間SKIPIF1<0上的奇函數(shù),且SKIPIF1<0,若SKIPIF1<0時(shí),有SKIPIF1<0.若SKIPIF1<0對(duì)所有SKIPIF1<0恒成立,則實(shí)數(shù)m的取值范圍可能是(

)A.SKIPIF1<0 B.SKIPIF1<0

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