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第09講拓展二:構(gòu)造函數(shù)法解決導(dǎo)數(shù)不等式問題(精講+精練)目錄第一部分:知識(shí)點(diǎn)精準(zhǔn)記憶第二部分:課前自我評(píng)估測(cè)試第三部分:典型例題剖析高頻考點(diǎn)一:構(gòu)造SKIPIF1<0或SKIPIF1<0(SKIPIF1<0,且SKIPIF1<0)型高頻考點(diǎn)二:構(gòu)造SKIPIF1<0或SKIPIF1<0(SKIPIF1<0,且SKIPIF1<0)型高頻考點(diǎn)三:構(gòu)造SKIPIF1<0或SKIPIF1<0型高頻考點(diǎn)四:構(gòu)造SKIPIF1<0或SKIPIF1<0型高頻考點(diǎn)五:根據(jù)不等式(求解目標(biāo))構(gòu)造具體函數(shù)第四部分:第09講拓展二:構(gòu)造函數(shù)法解決導(dǎo)數(shù)不等式問題(精練)第一部分:知識(shí)點(diǎn)精準(zhǔn)記憶第一部分:知識(shí)點(diǎn)精準(zhǔn)記憶1、兩個(gè)基本還原①SKIPIF1<0②SKIPIF1<02、類型一:構(gòu)造可導(dǎo)積函數(shù)①SKIPIF1<0高頻考點(diǎn)1:SKIPIF1<0②SKIPIF1<0高頻考點(diǎn)1:SKIPIF1<0高頻考點(diǎn)2SKIPIF1<0③SKIPIF1<0高頻考點(diǎn)1:SKIPIF1<0④SKIPIF1<0高頻考點(diǎn)1:SKIPIF1<0高頻考點(diǎn)2SKIPIF1<0⑤SKIPIF1<0⑥SKIPIF1<0序號(hào)條件構(gòu)造函數(shù)1SKIPIF1<0SKIPIF1<02SKIPIF1<0SKIPIF1<03SKIPIF1<0SKIPIF1<04SKIPIF1<0SKIPIF1<05SKIPIF1<0SKIPIF1<06SKIPIF1<0SKIPIF1<07SKIPIF1<0SKIPIF1<08SKIPIF1<0SKIPIF1<03、類型二:構(gòu)造可商函數(shù)①SKIPIF1<0高頻考點(diǎn)1:SKIPIF1<0②SKIPIF1<0高頻考點(diǎn)1:SKIPIF1<0高頻考點(diǎn)2:SKIPIF1<0③SKIPIF1<0⑥SKIPIF1<0第二部分:課前自我評(píng)估測(cè)試第二部分:課前自我評(píng)估測(cè)試1.(2022·全國(guó)·高二專題練習(xí))已知函數(shù)SKIPIF1<0是奇函數(shù)SKIPIF1<0的導(dǎo)函數(shù),SKIPIF1<0,當(dāng)x>0時(shí),SKIPIF1<0,則使SKIPIF1<0成立的x的取值范圍是(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<02.(2022·全國(guó)·高二單元測(cè)試)SKIPIF1<0是定義在R上的可導(dǎo)函數(shù),且SKIPIF1<0對(duì)任意正實(shí)數(shù)a恒成立,下列式子成立的是(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<03.(2022·江蘇·金陵中學(xué)高二期末)已知SKIPIF1<0為偶函數(shù),且當(dāng)SKIPIF1<0時(shí),SKIPIF1<0,其中SKIPIF1<0為SKIPIF1<0的導(dǎo)數(shù),則不等式SKIPIF1<0的解集為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<04.(2022·遼寧·撫順一中高二階段練習(xí))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.(2021·甘肅·蘭州一中高三階段練習(xí)(理))已知偶函數(shù)SKIPIF1<0的定義域?yàn)镾KIPIF1<0,其導(dǎo)函數(shù)為SKIPIF1<0,當(dāng)SKIPIF1<0時(shí),有SKIPIF1<0成立,則關(guān)于SKIPIF1<0的不等式SKIPIF1<0的解集為(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<0第三部分:典型例題剖析第三部分:典型例題剖析高頻考點(diǎn)一:構(gòu)造SKIPIF1<0或SKIPIF1<0(SKIPIF1<0,且SKIPIF1<0)型1.(2022·四川·廣安二中高二階段練習(xí)(理))已知函數(shù)SKIPIF1<0是定義在SKIPIF1<0的奇函數(shù),當(dāng)SKIPIF1<0時(shí),SKIPIF1<0,則不等式SKIPIF1<0的解集為(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<02.(2022·河南洛陽·高二期末(文))已知函數(shù)SKIPIF1<0的定義域?yàn)镾KIPIF1<0,其導(dǎo)函數(shù)為SKIPIF1<0,若SKIPIF1<0,則下列式子一定成立的是(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<03.(2022·河南濮陽·一模(理))已知函數(shù)SKIPIF1<0為定義域在R上的偶函數(shù),且當(dāng)SKIPIF1<0時(shí),函數(shù)SKIPIF1<0滿足SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0的解集是(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<04.(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.(-∞,1) B.(-1,1)C.(-∞,0)∪(0,1) D.(-1,0)∪(0,1)5.(2022·寧夏·平羅中學(xué)高二階段練習(xí)(理))已知函數(shù)SKIPIF1<0的定義域?yàn)镾KIPIF1<0,且滿足SKIPIF1<0(SKIPIF1<0是SKIPIF1<0的導(dǎo)函數(shù)),則不等式SKIPIF1<0的解集為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<06.(2022·江蘇蘇州·模擬預(yù)測(cè))已知函數(shù)SKIPIF1<0是定義在SKIPIF1<0上的奇函數(shù),SKIPIF1<0,當(dāng)SKIPIF1<0時(shí),有SKIPIF1<0成立,則不等式SKIPIF1<0的解集是(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<0高頻考點(diǎn)二:構(gòu)造SKIPIF1<0或SKIPIF1<0(SKIPIF1<0,且SKIPIF1<0)型1.(2022·四川·樹德中學(xué)高二階段練習(xí)(理))SKIPIF1<0是定義在SKIPIF1<0上的函數(shù),SKIPIF1<0是SKIPIF1<0的導(dǎo)函數(shù),已知SKIPIF1<0,且SKIPIF1<0,SKIPIF1<0,則不等式SKIPIF1<0的解集為(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<02.(2022·重慶市長(zhǎng)壽中學(xué)校高二階段練習(xí))若SKIPIF1<0在SKIPIF1<0上可導(dǎo)且SKIPIF1<0,其導(dǎo)函數(shù)SKIPIF1<0滿足SKIPIF1<0,則SKIPIF1<0的解集是(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<03.(2022·山東·棗莊市第三中學(xué)高二階段練習(xí))已知f(x)為定義在R上的可導(dǎo)函數(shù),SKIPIF1<0為其導(dǎo)函數(shù),且SKIPIF1<0恒成立,其中e是自然對(duì)數(shù)的底數(shù),則(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<04.(2022·福建福州·高二期末)若定義在R上的函數(shù)SKIPIF1<0滿足SKIPIF1<0,則不等式SKIPIF1<0的解集為(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<05.(2022·江蘇泰州·高二期末)已知函數(shù)SKIPIF1<0滿足SKIPIF1<0對(duì)于SKIPIF1<0恒成立,設(shè)SKIPIF1<0則下列不等關(guān)系正確的是(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<0高頻考點(diǎn)三:構(gòu)造SKIPIF1<0或SKIPIF1<0型1.(2022·山西·臨汾第一中學(xué)校高二期末)若函數(shù)SKIPIF1<0的導(dǎo)函數(shù)為SKIPIF1<0,對(duì)任意SKIPIF1<0,SKIPIF1<0恒成立,則(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<02.(2022·江蘇·徐州市第七中學(xué)高三階段練習(xí))已知函數(shù)SKIPIF1<0圖象關(guān)于點(diǎn)SKIPIF1<0對(duì)稱,且當(dāng)SKIPIF1<0時(shí),SKIPIF1<0則下列說法正確的是(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<03.(2022·遼寧·沈陽市第一二〇中學(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<04.(2022·全國(guó)·高三專題練習(xí)(理))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<0高頻考點(diǎn)四:構(gòu)造SKIPIF1<0或SKIPIF1<0型1.(2022·廣東·廣州市第四中學(xué)高二階段練習(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,則SKIPIF1<0,SKIPIF1<0,SKIPIF1<0的大小關(guān)系是(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<02.(2022·全國(guó)·高三專題練習(xí))已知函數(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)),則下列不等式成立的是(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<03.(2022·全國(guó)·高三專題練習(xí))已知函數(shù)SKIPIF1<0對(duì)任意的SKIPIF1<0滿足SKIPIF1<0(其中SKIPIF1<0為函數(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<04.(2022·全國(guó)·高二)定義在SKIPIF1<0上的函數(shù)SKIPIF1<0,其導(dǎo)函數(shù)為SKIPIF1<0,若恒有SKIPIF1<0,則下列不等式成立的是(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<05.(2022·全國(guó)·高三專題練習(xí))設(shè)奇函數(shù)SKIPIF1<0的定義域?yàn)镾KIPIF1<0,且SKIPIF1<0的圖象是連續(xù)不間斷,任意SKIPIF1<0,有SKIPIF1<0,若SKIPIF1<0,則SKIPIF1<0的取值范圍是(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<06.(2022·全國(guó)·高三專題練習(xí))已知函數(shù)SKIPIF1<0是函數(shù)SKIPIF1<0的導(dǎo)函數(shù),對(duì)任意SKIPIF1<0,SKIPIF1<0,則下列結(jié)論正確的是(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<0高頻考點(diǎn)五:根據(jù)不等式(求解目標(biāo))構(gòu)造具體函數(shù)1.(2022·全國(guó)·高二單元測(cè)試)已知函數(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.若SKIPIF1<0,且SKIPIF1<0,則使不等式SKIPIF1<0成立的x的值可能為(
)A.-2 B.-1 C.SKIPIF1<0 D.22.(2022·廣東梅州·二模)已知SKIPIF1<0是定義在SKIPIF1<0上的奇函數(shù),SKIPIF1<0是SKIPIF1<0的導(dǎo)函數(shù),當(dāng)SKIPIF1<0時(shí),SKIPIF1<0,且SKIPIF1<0,則不等式SKIPIF1<0的解集是(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0D.SKIPIF1<03.(2022·陜西榆林·三模(理))已知SKIPIF1<0是定義在SKIPIF1<0上的函數(shù),SKIPIF1<0是SKIPIF1<0的導(dǎo)函數(shù),且SKIPIF1<0,SKIPIF1<0,則下列結(jié)論一定成立的是(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<04.(2022·河南·模擬預(yù)測(cè)(理))已知函數(shù)SKIPIF1<0的定義域?yàn)镾KIPIF1<0,其導(dǎo)函數(shù)是SKIPIF1<0,且SKIPIF1<0.若SKIPIF1<0,則不等式SKIPIF1<0的解集是(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<05.(2022·江西·臨川一中高二階段練習(xí)(理))已知SKIPIF1<0是定義在SKIPIF1<0上的奇函數(shù),SKIPIF1<0是SKIPIF1<0的導(dǎo)函數(shù),SKIPIF1<0,當(dāng)SKIPIF1<0時(shí),SKIPIF1<0,則不等式SKIPIF1<0的解集是(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<06.(2022·河南·南陽市第二完全學(xué)校高級(jí)中學(xué)高二階段練習(xí)(文))已知函數(shù)SKIPIF1<0為SKIPIF1<0上的可導(dǎo)函數(shù),其導(dǎo)函數(shù)為SKIPIF1<0,且滿足SKIPIF1<0恒成立,SKIPIF1<0,則不等式SKIPIF1<0的解集為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<07.(2022·內(nèi)蒙古·赤峰二中高二期末(文))已知SKIPIF1<0是定義在SKIPIF1<0上的函數(shù),其導(dǎo)函數(shù)為SKIPIF1<0,且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<08.(2022·陜西·武功縣普集高級(jí)中學(xué)高三階段練習(xí)(理))定義在SKIPIF1<0上的函數(shù)SKIPIF1<0滿足SKIPIF1<0(SKIPIF1<0為自然對(duì)數(shù)的底數(shù)),其中SKIPIF1<0為SKIPIF1<0的導(dǎo)函數(shù),若SKIPIF1<0,則SKIPIF1<0的解集為(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<09.(2022·全國(guó)·江西科技學(xué)院附屬中學(xué)模擬預(yù)測(cè)(文))已知函數(shù)SKIPIF1<0的定義域?yàn)镾KIPIF1<0,圖象關(guān)于原點(diǎn)對(duì)稱,其導(dǎo)函數(shù)為SKIPIF1<0,若當(dāng)SKIPIF1<0時(shí)SKIPIF1<0,則不等式SKIPIF1<0的解集為(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<010.(2022·安徽省蚌埠第三中學(xué)高二開學(xué)考試)已知可導(dǎo)函數(shù)SKIPIF1<0的導(dǎo)函數(shù)為SKIPIF1<0,若對(duì)任意的SKIPIF1<0,都有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<011.(2022·全國(guó)·高三專題練習(xí))已知定義在SKIPIF1<0上的函數(shù)SKIPIF1<0滿足SKIPIF1<0,且當(dāng)SKIPIF1<0時(shí),有SKIPIF1<0,則不等式SKIPIF1<0的解集是(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<012.(2022·吉林·長(zhǎng)春外國(guó)語學(xué)校高二階段練習(xí))已知SKIPIF1<0是定義在R上的偶函數(shù),SKIPIF1<0是SKIPIF1<0的導(dǎo)函數(shù),當(dāng)SKIPIF1<0時(shí),SKIPIF1<0,且SKIPIF1<0,則SKIPIF1<0的解集是(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<013.(2022·天津市濱海新區(qū)塘沽第一中學(xué)高二階段練習(xí))定義在R上的函數(shù)SKIPIF1<0滿足SKIPIF1<0,且SKIPIF1<0,SKIPIF1<0是SKIPIF1<0的導(dǎo)函數(shù),則不等式SKIPIF1<0(其中e為自然對(duì)數(shù)的底數(shù))的解集為(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<0第五部分:第09講拓展二:構(gòu)造函數(shù)法解決導(dǎo)數(shù)不等式問題第五部分:第09講拓展二:構(gòu)造函數(shù)法解決導(dǎo)數(shù)不等式問題(精練)一、單選題1.(2022·河南·濮陽外國(guó)語學(xué)校高三階段練習(xí)(理))定義在R上的函數(shù)SKIPIF1<0的導(dǎo)函數(shù)為SKIPIF1<0,若SKIPIF1<0,SKIPIF1<0,則不等式SKIPIF1<0的解集為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<02.(2022·浙江·高三專題練習(xí))設(shè)SKIPIF1<0是定義在SKIPIF1<0上的函數(shù),其導(dǎo)函數(shù)為SKIPIF1<0,若SKIPIF1<0,SKIPIF1<0,則不等式SKIPIF1<0(其中SKIPIF1<0為自然對(duì)數(shù)的底數(shù))的解集為(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<03.(2022·全國(guó)·高二課時(shí)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a,b,c的大小關(guān)系是(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<04.(2022·全國(guó)·高三專題練習(xí))定義在SKIPIF1<0上的可導(dǎo)函數(shù)SKIPIF1<0恒有SKIPIF1<0,若SKIPIF1<0,則不等式SKIPIF1<0的解集為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<05.(2022·全國(guó)·高三專題練習(xí))已知函數(shù)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,則不等式SKIPIF1<0的解集為(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<06.(2022·全國(guó)·高三專題練習(xí))設(shè)函數(shù)f'(x)是偶函數(shù)f(x)(x∈R)的導(dǎo)數(shù),f(2)=0,當(dāng)x<0時(shí),f'(x)﹣2x+1<0,則使得函數(shù)f(x)>0成立的x的取值范圍是()A.(﹣∞,﹣2)∪(0,2) B.(﹣2,0)∪(2,+∞)C.(﹣∞,﹣2)∪(2,+∞) D.(﹣2,2)7.(2022·全國(guó)·高三專題練習(xí)(文))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<08.(2022·北京·101中學(xué)模擬預(yù)測(cè))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<09.(2022·貴州·畢節(jié)市第一中學(xué)高二階段練習(xí)(文))SKIPIF1<0是定義在SKIPIF1<0上的可導(dǎo)函數(shù),且滿足SKIPIF1<0,對(duì)任意正數(shù)SKIPIF1<0,若SKIPIF1<0,則必有(
)A.SKIPIF1<0 B.SKIPIF1<
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