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專題3-4構(gòu)造函數(shù)解不等式(選填)目錄TOC\o"1-1"\h\u 1題型一:構(gòu)造SKIPIF1<0或SKIPIF1<0(SKIPIF1<0,且SKIPIF1<0)型 1題型二:構(gòu)造SKIPIF1<0或SKIPIF1<0(SKIPIF1<0,且SKIPIF1<0)型 9題型三:構(gòu)造SKIPIF1<0或SKIPIF1<0型 14題型四:構(gòu)造SKIPIF1<0或SKIPIF1<0型 18題型五:根據(jù)不等式(求解目標(biāo))構(gòu)造具體函數(shù) 24 29一、單選題 29二、多選題 35三、填空題 37題型一:構(gòu)造SKIPIF1<0或SKIPIF1<0(SKIPIF1<0,且SKIPIF1<0)型【典例分析】例題1.(2022·福建龍巖·高二期末)已知定義在SKIPIF1<0上的函數(shù)SKIPIF1<0滿足:SKIPIF1<0,且SKIPIF1<0,則SKIPIF1<0的解集為_(kāi)__________.例題2.(2022·四川·成都外國(guó)語(yǔ)學(xué)校高二階段練習(xí)(文))已知定義在SKIPIF1<0上的偶函數(shù)SKIPIF1<0滿足:當(dāng)SKIPIF1<0時(shí),恒有SKIPIF1<0.若SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0,SKIPIF1<0,SKIPIF1<0的大小關(guān)系為(

)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0例題3.(2022·重慶市第七中學(xué)校高二階段練習(xí))已知定義域?yàn)镾KIPIF1<0的偶函數(shù)SKIPIF1<0,其導(dǎo)函數(shù)為SKIPIF1<0,對(duì)任意正實(shí)數(shù)SKIPIF1<0滿足SKIPIF1<0且SKIPIF1<0,則不等式SKIPIF1<0的解集是(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<0例題4.(2022·安徽滁州·高二期中)已知SKIPIF1<0是定義在SKIPIF1<0上的函數(shù)SKIPIF1<0的導(dǎo)函數(shù),且SKIPIF1<0,則SKIPIF1<0,SKIPIF1<0,SKIPIF1<0的大小關(guān)系為(

)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【提分秘籍】構(gòu)造可導(dǎo)積(商)函數(shù)模型:①SKIPIF1<0高頻考點(diǎn)1:SKIPIF1<0高頻考點(diǎn)2SKIPIF1<0②SKIPIF1<0高頻考點(diǎn)1:SKIPIF1<0高頻考點(diǎn)2SKIPIF1<0【變式演練】1.(2021·陜西漢中·模擬預(yù)測(cè)(文))已知定義在SKIPIF1<0上的函數(shù)SKIPIF1<0,其導(dǎo)函數(shù)為SKIPIF1<0,當(dāng)SKIPIF1<0時(shí),SKIPIF1<0,若SKIPIF1<0,則SKIPIF1<0的大小關(guān)系是(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<02.(2022·江蘇連云港·高三期中)設(shè)函數(shù)SKIPIF1<0的導(dǎo)函數(shù)為SKIPIF1<0,對(duì)任意SKIPIF1<0,都有SKIPIF1<0成立,則(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<0與SKIPIF1<0的大小不確定3.(2023·全國(guó)·高三專題練習(xí))已知奇函數(shù)SKIPIF1<0是定義在R上的可導(dǎo)函數(shù),其導(dǎo)函數(shù)為SKIPIF1<0,當(dāng)SKIPIF1<0時(shí),有SKIPIF1<0,則不等式SKIPIF1<0的解集為(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<04.(2022·河南·南陽(yáng)中學(xué)高二階段練習(xí)(理))函數(shù)SKIPIF1<0是定義在區(qū)間SKIPIF1<0上的可導(dǎo)函數(shù),其導(dǎo)函數(shù)為SKIPIF1<0,且滿足SKIPIF1<0,則不等式SKIPIF1<0的解集為(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<05.(2022·河北·唐山一中高二期中)SKIPIF1<0在SKIPIF1<0上的導(dǎo)函數(shù)為SKIPIF1<0,SKIPIF1<0,則下列不等式成立的是(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<05.(2022·遼寧·北鎮(zhèn)市滿族高級(jí)中學(xué)高三階段練習(xí))設(shè)SKIPIF1<0是定義在R上的奇函數(shù),且SKIPIF1<0,當(dāng)SKIPIF1<0時(shí),有SKIPIF1<0恒成立,則不等式SKIPIF1<0的解集為_(kāi)_____.6.(2022·湖北·高二期中)設(shè)函數(shù)SKIPIF1<0是奇函數(shù)SKIPIF1<0的導(dǎo)函數(shù).SKIPIF1<0,當(dāng)SKIPIF1<0時(shí),SKIPIF1<0,則使得SKIPIF1<0成立的SKIPIF1<0的取值范圍為_(kāi)_____.題型二:構(gòu)造SKIPIF1<0或SKIPIF1<0(SKIPIF1<0,且SKIPIF1<0)型【典例分析】例題1.(2022·甘肅·永昌縣第一高級(jí)中學(xué)高二階段練習(xí)(理))已知SKIPIF1<0為SKIPIF1<0上的可導(dǎo)函數(shù),其導(dǎo)函數(shù)為SKIPIF1<0,且對(duì)于任意的SKIPIF1<0,均有SKIPIF1<0,則(

)A.SKIPIF1<0,SKIPIF1<0 B.SKIPIF1<0,SKIPIF1<0 C.SKIPIF1<0,SKIPIF1<0 D.SKIPIF1<0,SKIPIF1<0例題2.(2022·重慶市涪陵高級(jí)中學(xué)校高三階段練習(xí))已知定義域?yàn)镾KIPIF1<0的函數(shù)SKIPIF1<0的導(dǎo)函數(shù)為SKIPIF1<0,且SKIPIF1<0,若實(shí)數(shù)SKIPIF1<0,則下列不等式恒成立的是(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<0例題3.(2022·福建省詔安縣橋東中學(xué)高三期中)已知函數(shù)SKIPIF1<0的定義域和值域均為SKIPIF1<0,SKIPIF1<0的導(dǎo)函數(shù)為SKIPIF1<0,且滿足SKIPIF1<0,則SKIPIF1<0的范圍是______.【提分秘籍】構(gòu)造可導(dǎo)積(商)函數(shù)模型:①SKIPIF1<0高頻考點(diǎn)1:SKIPIF1<0②SKIPIF1<0高頻考點(diǎn)1:SKIPIF1<0【變式演練】1.(2022·全國(guó)·高二課時(shí)練習(xí))已知函數(shù)SKIPIF1<0的導(dǎo)函數(shù)為SKIPIF1<0,且SKIPIF1<0對(duì)任意的SKIPIF1<0恒成立,則(

)A.SKIPIF1<0,SKIPIF1<0B.SKIPIF1<0,SKIPIF1<0C.SKIPIF1<0,SKIPIF1<0D.SKIPIF1<0,SKIPIF1<02.(2022·安徽師范大學(xué)附屬中學(xué)高二期中(文))設(shè)定義域?yàn)镽的函數(shù)SKIPIF1<0滿足SKIPIF1<0,則不等式SKIPIF1<0的解集為A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<03.(2022·黑龍江·虎林市高級(jí)中學(xué)高三開(kāi)學(xué)考試)定義域?yàn)镾KIPIF1<0的可導(dǎo)函數(shù)的導(dǎo)函數(shù)SKIPIF1<0為SKIPIF1<0,滿足SKIPIF1<0,且SKIPIF1<0,則不等式SKIPIF1<0的解集為(

)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<04.(多選)(2022·全國(guó)·高二專題練習(xí))已知SKIPIF1<0是函數(shù)SKIPIF1<0的導(dǎo)函數(shù),函數(shù)SKIPIF1<0對(duì)任意的SKIPIF1<0,都滿足SKIPIF1<0,則下列不等式成立的是(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<05.(2022·廣東·佛山市南海區(qū)九江中學(xué)高二階段練習(xí))已知SKIPIF1<0的定義域是SKIPIF1<0,SKIPIF1<0為SKIPIF1<0的導(dǎo)函數(shù),且滿足SKIPIF1<0,則不等式SKIPIF1<0的解集是______.題型三:構(gòu)造SKIPIF1<0或SKIPIF1<0型【典例分析】例題1.(2021·重慶市實(shí)驗(yàn)中學(xué)高二階段練習(xí))已知函數(shù)SKIPIF1<0對(duì)任意SKIPIF1<0,滿足SKIPIF1<0SKIPIF1<0,則(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<0例題2.(2022·全國(guó)·高二專題練習(xí))函數(shù)SKIPIF1<0的定義域是SKIPIF1<0,其導(dǎo)函數(shù)是SKIPIF1<0,若SKIPIF1<0,則關(guān)于SKIPIF1<0的不等式SKIPIF1<0的解集為_(kāi)_____.【提分秘籍】構(gòu)造可導(dǎo)積(商)函數(shù)模型:①SKIPIF1<0②SKIPIF1<0【變式演練】1.(2022·全國(guó)·高三專題練習(xí))定義在SKIPIF1<0上的函數(shù)SKIPIF1<0,SKIPIF1<0是它的導(dǎo)函數(shù),且恒有SKIPIF1<0成立,則(

).A.SKIPIF1<0B.SKIPIF1<0C.SKIPIF1<0D.SKIPIF1<02.(2023·全國(guó)·高三專題練習(xí))函數(shù)SKIPIF1<0定義域?yàn)镾KIPIF1<0,其導(dǎo)函數(shù)是SKIPIF1<0,當(dāng)SKIPIF1<0時(shí),有SKIPIF1<0,則關(guān)于SKIPIF1<0的不等式SKIPIF1<0的解集為_(kāi)_________.題型四:構(gòu)造SKIPIF1<0或SKIPIF1<0型【典例分析】例題1.(2022·全國(guó)·高三專題練習(xí))已知函數(shù)SKIPIF1<0的定義域?yàn)镾KIPIF1<0,其導(dǎo)函數(shù)是SKIPIF1<0.有SKIPIF1<0,則關(guān)于SKIPIF1<0的不等式SKIPIF1<0的解集為(

)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0例題2.(2023·全國(guó)·高三專題練習(xí))設(shè)函數(shù)SKIPIF1<0是定義在SKIPIF1<0上的函數(shù)SKIPIF1<0的導(dǎo)函數(shù),有SKIPIF1<0,若SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0,SKIPIF1<0,SKIPIF1<0的大小關(guān)系是(

)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【提分秘籍】構(gòu)造可導(dǎo)積(商)函數(shù)模型:①SKIPIF1<0;②SKIPIF1<0【變式演練】1.(多選)(2022·全國(guó)·高二課時(shí)練習(xí))已知定義在SKIPIF1<0上的函數(shù)SKIPIF1<0的導(dǎo)函數(shù)為SKIPIF1<0,且SKIPIF1<0,SKIPIF1<0SKIPIF1<0,則下列選項(xiàng)中正確的是(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<02.(多選)(2021·江蘇·高二單元測(cè)試)已知偶函數(shù)SKIPIF1<0對(duì)于任意的SKIPIF1<0滿足SKIPIF1<0(其中SKIPIF1<0是函數(shù)SKIPIF1<0的導(dǎo)函數(shù)),則下列不等式中成立的是(

).A.SKIPIF1<0B.SKIPIF1<0C.SKIPIF1<0D.SKIPIF1<03.(多選)(2022·山東·日照一中高三階段練習(xí))已知函數(shù)SKIPIF1<0對(duì)于任意的SKIPIF1<0,均滿足SKIPIF1<0,其中SKIPIF1<0是SKIPIF1<0的導(dǎo)函數(shù),則下列不等式成立的是(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<04.(多選)(2022·江蘇·南京師大蘇州實(shí)驗(yàn)學(xué)校高二階段練習(xí))已知函數(shù)SKIPIF1<0是偶函數(shù),對(duì)于任意的SKIPIF1<0滿足SKIPIF1<0(其中SKIPIF1<0是函數(shù)SKIPIF1<0的導(dǎo)函數(shù)),則下列不等式成立的是(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<0題型五:根據(jù)不等式(求解目標(biāo))構(gòu)造具體函數(shù)【典例分析】例題1.(青海省海東市2022-2023學(xué)年高三上學(xué)期12月第一次模擬數(shù)學(xué)(文)試題)已知定義在SKIPIF1<0上的函數(shù)SKIPIF1<0的導(dǎo)函數(shù)為SKIPIF1<0,若SKIPIF1<0,且SKIPIF1<0,則不等式SKIPIF1<0的解集是(

)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0例題2.(2022·江西·金溪一中高二期末(文))已知SKIPIF1<0是定義在SKIPIF1<0上的函數(shù),SKIPIF1<0是其導(dǎo)函數(shù),若SKIPIF1<0,且SKIPIF1<0,則不等式SKIPIF1<0的解集為(

)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0例題3.(2022·山西大附中三模(理))已知定義在SKIPIF1<0上的函數(shù)SKIPIF1<0的圖象關(guān)于點(diǎn)SKIPIF1<0對(duì)稱,若對(duì)任意的SKIPIF1<0有SKIPIF1<0(SKIPIF1<0是函數(shù)SKIPIF1<0的導(dǎo)函數(shù))成立,且SKIPIF1<0,則關(guān)于SKIPIF1<0的不等式SKIPIF1<0的解集是(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<0【變式演練】1.(2022·云南·羅平縣第一中學(xué)高二期中)定義在SKIPIF1<0上的函數(shù)SKIPIF1<0滿足SKIPIF1<0,且SKIPIF1<0,則不等式SKIPIF1<0的解集為(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<02.(多選)(2022·湖南·長(zhǎng)沙市同升湖高級(jí)中學(xué)有限公司高三階段練習(xí))定義在SKIPIF1<0上函數(shù)SKIPIF1<0的導(dǎo)函數(shù)為SKIPIF1<0,滿足SKIPIF1<0則下列正確的是(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<03.(多選)(2022·重慶·高二階段練習(xí))定義在SKIPIF1<0上的函數(shù)SKIPIF1<0滿足SKIPIF1<0,且SKIPIF1<0,則滿足不等式SKIPIF1<0的SKIPIF1<0的取值有(

)A.SKIPIF1<0 B.0 C.1 D.24.(2022·江蘇·鹽城中學(xué)高三階段練習(xí))定義在SKIPIF1<0上的函數(shù)SKIPIF1<0滿足SKIPIF1<0,則不等式SKIPIF1<0的解集為_(kāi)__________.一、單選題1.(2022·山西呂梁·高二期末)設(shè)SKIPIF1<0是定義在R上的函數(shù),其導(dǎo)函數(shù)為SKIPIF1<0,滿足SKIPIF1<0,若SKIPIF1<0,則(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.a(chǎn),b的大小無(wú)法判斷2.(2022·遼寧·沈陽(yáng)市第一二〇中學(xué)高三階段練習(xí))已知函數(shù)SKIPIF1<0為函數(shù)SKIPIF1<0的導(dǎo)函數(shù),滿足SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,則下面大小關(guān)系正確的是(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<03.(2021·河南·高三階段練習(xí)(文))已知偶函數(shù)SKIPIF1<0的定義域?yàn)镾KIPIF1<0,SKIPIF1<0,當(dāng)SKIPIF1<0時(shí),SKIPIF1<0恒成立,則不等式SKIPIF1<0的解集為(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<04.(2021·陜西漢中·模擬預(yù)測(cè)(理))已知定義在SKIPIF1<0上的函數(shù)SKIPIF1<0,其導(dǎo)函數(shù)為SKIPIF1<0,當(dāng)SKIPIF1<0時(shí),SKIPIF1<0,若SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0,SKIPIF1<0,SKIPIF1<0的大小關(guān)系是(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<05.(2023·全國(guó)·高三專題練習(xí))定義在SKIPIF1<0上的函數(shù)SKIPIF1<0的導(dǎo)函數(shù)SKIPIF1<0滿足SKIPIF1<0,則必有(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<06.(2021·四川·仁壽一中高二階段練習(xí)(文))已知函數(shù)SKIPIF1<0是定義域R上的可導(dǎo)函數(shù),其導(dǎo)函數(shù)為SKIPIF1<0,對(duì)于任意的SKIPIF1<0恒成立,則以下選項(xiàng)一定正確的是(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<07.(2019·云南師大附中高三階段練習(xí)(文))已知定義在SKIPIF1<0上的函數(shù)SKIPIF1<0是其導(dǎo)函數(shù),且滿足SKIPIF1<0,則不等式SKIPIF1<0的解集為(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<08.(2021·陜西渭南·高三階段練習(xí)(文))已知SKIPIF1<0是定義在SKIPIF1<0上的偶函數(shù),且當(dāng)SKIPIF1<0時(shí),SKIPIF1<0,則(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<0二、多選題9.(2023·全國(guó)·高三專題練習(xí))已知函數(shù)SKIPIF1<0的定義域?yàn)镾KIPIF1<0,其導(dǎo)函數(shù)為SKIPIF1<0,對(duì)于任意SKIPIF1<0,都有SKIPIF1<0,則使不等式SKIPIF1<0成立的SKIPIF1<0的值可以為(

)A.SKIPIF1<0 B.1 C.2 D.310.(2020·全國(guó)·高二課時(shí)練習(xí))已知函數(shù)SKIPIF1<0的導(dǎo)函數(shù)為SKIPIF1<0,若SKIPIF1<0對(duì)SKIPIF1<0恒成立,則下列不等式中,一定成立的是(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<011.(2022·山東·乳山市銀灘高級(jí)中學(xué)高三階段練習(xí))已知SKIPIF1<0是定義在SKIPIF1<0上的函數(shù)SKIPIF1<0的導(dǎo)數(shù),且SKIPIF1<0,則下列不等式一定成立的是(

)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<012.(2023·全國(guó)·高三專題練習(xí))已知定義在SKIPIF1<0上的函數(shù)SKIPIF1<0的導(dǎo)函數(shù)為SKIPIF1<0,且SKIPIF1<0,SKIPIF1<0,則下列判斷中正確的是(

)A.SKIPIF1<0<SKIPIF1<0 B.SKIPIF1<0>0C.SKIPIF1<0>SKIPIF1<0 D.SKIPIF1<0>SKIPIF1<0三、填空題13.(2020·全國(guó)·高三專題練習(xí))已知偶函數(shù)SKIPIF1<0的定義域是SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,其導(dǎo)函數(shù)為SKIPIF1<0,對(duì)定義域內(nèi)的任意SKIPIF1<0,都有SKIPIF1<0成立,則不等式

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