新高考數(shù)學(xué)模擬測(cè)試卷07(原卷版+解析版)_第1頁
新高考數(shù)學(xué)模擬測(cè)試卷07(原卷版+解析版)_第2頁
新高考數(shù)學(xué)模擬測(cè)試卷07(原卷版+解析版)_第3頁
新高考數(shù)學(xué)模擬測(cè)試卷07(原卷版+解析版)_第4頁
新高考數(shù)學(xué)模擬測(cè)試卷07(原卷版+解析版)_第5頁
已閱讀5頁,還剩23頁未讀, 繼續(xù)免費(fèi)閱讀

下載本文檔

版權(quán)說明:本文檔由用戶提供并上傳,收益歸屬內(nèi)容提供方,若內(nèi)容存在侵權(quán),請(qǐng)進(jìn)行舉報(bào)或認(rèn)領(lǐng)

文檔簡介

新高考數(shù)學(xué)模擬測(cè)試卷一、選擇題:本題共8小題,每小題5分,共40分.在每小題給出的四個(gè)選項(xiàng)中,只有一項(xiàng)是符合題目要求的.1.已知復(fù)數(shù)SKIPIF1<0,則復(fù)數(shù)SKIPIF1<0在復(fù)平面內(nèi)對(duì)應(yīng)的點(diǎn)位于()A.第一縣象限 B.第二象限C.第三象限 D.第四象限2.已知全集為SKIPIF1<0,集合SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0()A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0或SKIPIF1<0 D.SKIPIF1<0或SKIPIF1<03.已知命題SKIPIF1<0空間兩平面SKIPIF1<0,直線SKIPIF1<0,則直線SKIPIF1<0;命題SKIPIF1<0若關(guān)于SKIPIF1<0的方程SKIPIF1<0有兩個(gè)不同實(shí)根SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0.下列命題為真命題的是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<04.在新冠肺炎疫情期間,某學(xué)校定期對(duì)教室進(jìn)行藥熏消毒.教室內(nèi)每立方米空氣中的含藥量SKIPIF1<0(單位:毫克)隨時(shí)間SKIPIF1<0(單位:小時(shí))的變化情況如圖所示.在藥物釋放的過程中,SKIPIF1<0與SKIPIF1<0成正比;藥物釋放完畢后,SKIPIF1<0與SKIPIF1<0的函數(shù)關(guān)系式為SKIPIF1<0(SKIPIF1<0為常數(shù)).據(jù)測(cè)定,當(dāng)空氣中每立方米的含藥量降低到0.2毫克以下時(shí),學(xué)生方可進(jìn)入教室.那么,從藥物釋放開始到學(xué)生能回到教室,至少在()(參考數(shù)值SKIPIF1<0)A.42分鐘后 B.48分鐘后C.50分鐘后 D.60分鐘后5.為落實(shí)《國家學(xué)生體質(zhì)健康標(biāo)準(zhǔn)》達(dá)標(biāo)測(cè)試工作,全面提升學(xué)生的體質(zhì)健康水平,某校高二年級(jí)體育組教師在高二年級(jí)隨機(jī)抽取部分男生,測(cè)試了立定跳遠(yuǎn)項(xiàng)目,依據(jù)測(cè)試數(shù)據(jù)繪制了如圖所示的頻率直方圖.已知立定跳遠(yuǎn)SKIPIF1<0以上成績?yōu)榧案?,SKIPIF1<0以上成績?yōu)閮?yōu)秀,根據(jù)圖中的數(shù)據(jù)估計(jì)該校高二年級(jí)男生立定跳遠(yuǎn)項(xiàng)目的優(yōu)秀率和圖中的SKIPIF1<0分別是是()A.3%,0.010 B.3%,0.012 C.6%,0.010 D.6%,0.0126.將函數(shù)SKIPIF1<0的圖象沿SKIPIF1<0軸向左平移SKIPIF1<0個(gè)單位后得到函數(shù)SKIPIF1<0,若SKIPIF1<0為偶函數(shù),則SKIPIF1<0的最小值為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<07.已知SKIPIF1<0,若函數(shù)SKIPIF1<0有4個(gè)零點(diǎn),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.已知函數(shù)SKIPIF1<0,設(shè)方程SKIPIF1<0的根從小到大依次為SKIPIF1<0,則數(shù)列SKIPIF1<0的前n項(xiàng)和為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0二、選擇題:本題共4小題,每小題5分,共20分.在每小題給出的選項(xiàng)中,有多項(xiàng)符合題目要求.全部選對(duì)的得5分,部分選對(duì)的得2分,有選錯(cuò)的得0分.9.設(shè)SKIPIF1<0,SKIPIF1<0為正數(shù),若直線SKIPIF1<0被圓SKIPIF1<0截得弦長為4,則()A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<010.已知拋物線SKIPIF1<0,SKIPIF1<0為SKIPIF1<0的焦點(diǎn),過焦點(diǎn)SKIPIF1<0且傾斜角為SKIPIF1<0的直線交拋物線SKIPIF1<0于SKIPIF1<0,SKIPIF1<0兩點(diǎn),則下列說法正確的是()A.SKIPIF1<0在點(diǎn)SKIPIF1<0處的切線方程為SKIPIF1<0B.SKIPIF1<0C.過拋物線SKIPIF1<0準(zhǔn)線上的任意一點(diǎn)SKIPIF1<0作SKIPIF1<0的切線,則過兩切點(diǎn)SKIPIF1<0,SKIPIF1<0的弦必過焦點(diǎn)SKIPIF1<0D.SKIPIF1<011.已知函數(shù)SKIPIF1<0,則下列說法正確的是()A.SKIPIF1<0有且只有一個(gè)極值點(diǎn)B.設(shè)SKIPIF1<0,則SKIPIF1<0與SKIPIF1<0的單調(diào)性相同C.SKIPIF1<0有且只有兩個(gè)零點(diǎn)D.SKIPIF1<0在SKIPIF1<0上單調(diào)遞增12.如圖所示,在棱長為SKIPIF1<0的正方體SKIPIF1<0中,過對(duì)角線SKIPIF1<0的一個(gè)平面交棱SKIPIF1<0于點(diǎn)SKIPIF1<0,交棱SKIPIF1<0于點(diǎn)SKIPIF1<0,得四邊形SKIPIF1<0,在以下結(jié)論中,正確的是()A.四邊形SKIPIF1<0有可能是梯形B.四邊形SKIPIF1<0在底面SKIPIF1<0內(nèi)的投影一定是正方形C.四邊形SKIPIF1<0有可能垂直于平面SKIPIF1<0D.四邊形SKIPIF1<0面積的最小值為SKIPIF1<0三、填空題:本題共4小題,每小題5分,共20分.13.已知在等腰直角SKIPIF1<0中,SKIPIF1<0,若SKIPIF1<0,則SKIPIF1<0等于________.14.新型冠狀病毒蔓延以來,世界各國都在研制疫苗,某專家認(rèn)為,某種抗病毒藥品對(duì)新型冠狀病毒具有抗病毒、抗炎作用,假如規(guī)定每天早上7:00和晚上7:00各服藥一次,每次服用該藥藥量700毫克具有抗病毒功效,若人的腎臟每12小時(shí)從體內(nèi)濾出這種藥的70%,該藥在人體內(nèi)含量超過1000毫克,就將產(chǎn)生副作用,若人長期服用這種藥,則這種藥__________(填“會(huì)”或者“不會(huì)”)對(duì)人體產(chǎn)生副作用.15.已知雙曲線SKIPIF1<0:SKIPIF1<0與拋物線SKIPIF1<0:SKIPIF1<0的焦點(diǎn)SKIPIF1<0重合,過點(diǎn)SKIPIF1<0作直線SKIPIF1<0與拋物線SKIPIF1<0交于SKIPIF1<0、SKIPIF1<0兩點(diǎn)(SKIPIF1<0點(diǎn)在SKIPIF1<0軸上方)且滿足SKIPIF1<0,若直線SKIPIF1<0只與雙曲線右支相交于兩點(diǎn),則雙曲線SKIPIF1<0的離心率SKIPIF1<0的取值范圍是______.16.定義在SKIPIF1<0上的函數(shù)SKIPIF1<0滿足:SKIPIF1<0,函數(shù)SKIPIF1<0,若SKIPIF1<0,則SKIPIF1<0______.四、解答題:本題共6小題,共70分.解答應(yīng)寫出文字說明、證明過程或演算步驟.17.在①SKIPIF1<0,②SKIPIF1<0,③SKIPIF1<0,這三個(gè)條件中任選一個(gè),補(bǔ)充在下面的問題中,并解決該問題.已知SKIPIF1<0的內(nèi)角SKIPIF1<0,SKIPIF1<0,SKIPIF1<0的對(duì)邊分別為SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,___________,SKIPIF1<0,SKIPIF1<0,求SKIPIF1<0的面積.18.已知數(shù)列SKIPIF1<0對(duì)任意的SKIPIF1<0都滿足SKIPIF1<0.(1)求數(shù)列SKIPIF1<0的通項(xiàng)公式;(2)令SKIPIF1<0,求數(shù)列SKIPIF1<0的前SKIPIF1<0項(xiàng)和為SKIPIF1<0.19.在一次大范圍的隨機(jī)知識(shí)問卷調(diào)查中,通過隨機(jī)抽樣,得到參加問卷調(diào)查的100人的得分統(tǒng)計(jì)結(jié)果如下表所示:得分SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0頻數(shù)213212524114(1)由頻數(shù)分布表可以大致認(rèn)為,此次問卷調(diào)查的得分SKIPIF1<0,SKIPIF1<0近似為這100人得分的平均值(同一組中的數(shù)據(jù)用該組區(qū)間的左端點(diǎn)值作代表).①求SKIPIF1<0的值;②若SKIPIF1<0,求SKIPIF1<0的值;(2)在(1)的條件下,為此次參加問卷調(diào)查的市民制定如下獎(jiǎng)勵(lì)方案:①得分不低于SKIPIF1<0的可以獲贈(zèng)2次隨機(jī)話費(fèi),得分低于SKIPIF1<0的可以獲贈(zèng)1次隨機(jī)話費(fèi);②每次獲贈(zèng)的隨機(jī)話費(fèi)和對(duì)應(yīng)的概率為:贈(zèng)送話費(fèi)的金額(單位:元)2050概率SKIPIF1<0SKIPIF1<0現(xiàn)有市民甲參加此次問卷調(diào)查,記SKIPIF1<0(單位:元)為該市民參加問卷調(diào)查獲贈(zèng)的話費(fèi),求SKIPIF1<0的分布列與數(shù)學(xué)期望.20.如圖,四邊形SKIPIF1<0為正方形,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0為銳角三角形,SKIPIF1<0,SKIPIF1<0分別是邊SKIPIF1<0,SKIPIF1<0的中點(diǎn),直線SKIPIF1<0與平面SKIPIF1<0所成的角為SKIPIF1<0.(1)求證:SKIPIF1<0平面SKIPIF1<0;(2)若SKIPIF1<0為銳角三角形,求二面角SKIPIF1<0的余弦值.21.已知橢圓SKIPIF1<0的長軸長是焦距的SKIPIF1<0倍,且過點(diǎn)SKIPIF1<0.(1)求橢圓C的標(biāo)準(zhǔn)方程;(2)點(diǎn)P是圓心在原點(diǎn)O,半徑為SKIPIF1<0的圓O上的一個(gè)動(dòng)點(diǎn),過點(diǎn)P作橢圓的兩條切線,且分別交其圓O于點(diǎn)E?F,求動(dòng)弦SKIPIF1<0長的取值范圍.22.設(shè)函數(shù)SKIPIF1<0,SKIPIF1<0,SKIPIF1<0.(1)討論SKIPIF1<0的單調(diào)性;(2)當(dāng)SKIPIF1<0且SKIPIF1<0時(shí),函數(shù)SKIPIF1<0SKIPIF1<0,證明:SKIPIF1<0存在極小值點(diǎn)SKIPIF1<0,且SKIPIF1<0.新高考數(shù)學(xué)模擬測(cè)試卷一、選擇題:本題共8小題,每小題5分,共40分.在每小題給出的四個(gè)選項(xiàng)中,只有一項(xiàng)是符合題目要求的.1.已知復(fù)數(shù)SKIPIF1<0,則復(fù)數(shù)SKIPIF1<0在復(fù)平面內(nèi)對(duì)應(yīng)的點(diǎn)位于()A.第一縣象限 B.第二象限C.第三象限 D.第四象限【答案】D【解析】因?yàn)镾KIPIF1<0SKIPIF1<0,所以復(fù)數(shù)SKIPIF1<0在復(fù)平面內(nèi)對(duì)應(yīng)的點(diǎn)位于第四象限.故選:D2.已知全集為SKIPIF1<0,集合SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0()A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0或SKIPIF1<0 D.SKIPIF1<0或SKIPIF1<0【答案】D【解析】由不等式SKIPIF1<0,可得SKIPIF1<0,所以SKIPIF1<0,又由不等式SKIPIF1<0,解得SKIPIF1<0或SKIPIF1<0,所以SKIPIF1<0或SKIPIF1<0,根據(jù)集合的交集的概念及運(yùn)算,可得SKIPIF1<0SKIPIF1<0或SKIPIF1<0.故選:D.3.已知命題SKIPIF1<0空間兩平面SKIPIF1<0,直線SKIPIF1<0,則直線SKIPIF1<0;命題SKIPIF1<0若關(guān)于SKIPIF1<0的方程SKIPIF1<0有兩個(gè)不同實(shí)根SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0.下列命題為真命題的是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【答案】B【解析】空間兩平面SKIPIF1<0,直線SKIPIF1<0,則直線SKIPIF1<0與SKIPIF1<0可能平行、垂直、或在面內(nèi);故命題SKIPIF1<0為假命題;SKIPIF1<0為真命題;對(duì)于命題SKIPIF1<0,討論SKIPIF1<0和SKIPIF1<0兩種情況,當(dāng)SKIPIF1<0時(shí),SKIPIF1<0與SKIPIF1<0的大致圖像如下,結(jié)合圖像可得,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,兩式作差可得SKIPIF1<0,因?yàn)镾KIPIF1<0SKIPIF1<0在SKIPIF1<0上單調(diào)遞減,所以SKIPIF1<0;當(dāng)當(dāng)SKIPIF1<0時(shí),SKIPIF1<0與SKIPIF1<0的大致圖像如下,結(jié)合圖像可得,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,兩式作差可得SKIPIF1<0,因?yàn)镾KIPIF1<0SKIPIF1<0在SKIPIF1<0上單調(diào)遞增,所以SKIPIF1<0;綜上,SKIPIF1<0;即命題SKIPIF1<0為真命題,SKIPIF1<0為假命題;所以SKIPIF1<0是假命題;SKIPIF1<0是真命題;SKIPIF1<0是假命題;SKIPIF1<0是假命題.故選:B.4.在新冠肺炎疫情期間,某學(xué)校定期對(duì)教室進(jìn)行藥熏消毒.教室內(nèi)每立方米空氣中的含藥量SKIPIF1<0(單位:毫克)隨時(shí)間SKIPIF1<0(單位:小時(shí))的變化情況如圖所示.在藥物釋放的過程中,SKIPIF1<0與SKIPIF1<0成正比;藥物釋放完畢后,SKIPIF1<0與SKIPIF1<0的函數(shù)關(guān)系式為SKIPIF1<0(SKIPIF1<0為常數(shù)).據(jù)測(cè)定,當(dāng)空氣中每立方米的含藥量降低到0.2毫克以下時(shí),學(xué)生方可進(jìn)入教室.那么,從藥物釋放開始到學(xué)生能回到教室,至少在()(參考數(shù)值SKIPIF1<0)A.42分鐘后 B.48分鐘后C.50分鐘后 D.60分鐘后【答案】B【解析】把點(diǎn)SKIPIF1<0代入SKIPIF1<0中,SKIPIF1<0,解得SKIPIF1<0.所以當(dāng)SKIPIF1<0時(shí),SKIPIF1<0因?yàn)楫?dāng)空氣中每立方米的含藥量降低到0.2毫克以下時(shí),學(xué)生方可進(jìn)入教室所以SKIPIF1<0,解得SKIPIF1<0.至少需要經(jīng)過SKIPIF1<0分鐘后,學(xué)生才能回到教室.故選:B.5.為落實(shí)《國家學(xué)生體質(zhì)健康標(biāo)準(zhǔn)》達(dá)標(biāo)測(cè)試工作,全面提升學(xué)生的體質(zhì)健康水平,某校高二年級(jí)體育組教師在高二年級(jí)隨機(jī)抽取部分男生,測(cè)試了立定跳遠(yuǎn)項(xiàng)目,依據(jù)測(cè)試數(shù)據(jù)繪制了如圖所示的頻率直方圖.已知立定跳遠(yuǎn)SKIPIF1<0以上成績?yōu)榧案?,SKIPIF1<0以上成績?yōu)閮?yōu)秀,根據(jù)圖中的數(shù)據(jù)估計(jì)該校高二年級(jí)男生立定跳遠(yuǎn)項(xiàng)目的優(yōu)秀率和圖中的SKIPIF1<0分別是是()A.3%,0.010 B.3%,0.012 C.6%,0.010 D.6%,0.012【答案】C【解析】由頻率分布直方圖可得,優(yōu)秀率為SKIPIF1<0;由SKIPIF1<0,解得SKIPIF1<0;故選:C.6.將函數(shù)SKIPIF1<0的圖象沿SKIPIF1<0軸向左平移SKIPIF1<0個(gè)單位后得到函數(shù)SKIPIF1<0,若SKIPIF1<0為偶函數(shù),則SKIPIF1<0的最小值為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【答案】A【解析】SKIPIF1<0函數(shù)SKIPIF1<0,將函數(shù)SKIPIF1<0的圖象沿SKIPIF1<0軸向左平移SKIPIF1<0個(gè)單位后,得到函數(shù)SKIPIF1<0,因?yàn)楹瘮?shù)是偶函數(shù),SKIPIF1<0SKIPIF1<0.當(dāng)SKIPIF1<0時(shí),SKIPIF1<0.故選:A7.已知SKIPIF1<0,若函數(shù)SKIPIF1<0有4個(gè)零點(diǎn),則實(shí)數(shù)SKIPIF1<0的取值范圍是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【答案】C【解析】由題意SKIPIF1<0有4個(gè)零點(diǎn),即SKIPIF1<0有4個(gè)零點(diǎn).設(shè)SKIPIF1<0,則SKIPIF1<0恒過點(diǎn)SKIPIF1<0,所以函數(shù)SKIPIF1<0與SKIPIF1<0的圖象有4個(gè)交點(diǎn),在同一直角坐標(biāo)系下作出函數(shù)SKIPIF1<0與SKIPIF1<0的圖象,如圖.由圖象可知,當(dāng)函數(shù)SKIPIF1<0過點(diǎn)SKIPIF1<0和SKIPIF1<0時(shí),即SKIPIF1<0時(shí),此時(shí)函數(shù)SKIPIF1<0與SKIPIF1<0的圖象恰有3個(gè)交點(diǎn);當(dāng)SKIPIF1<0時(shí),函數(shù)SKIPIF1<0與SKIPIF1<0的圖象至多有2個(gè)交點(diǎn)當(dāng)SKIPIF1<0時(shí),若函數(shù)SKIPIF1<0與SKIPIF1<0的圖象相切時(shí),設(shè)切點(diǎn)為SKIPIF1<0,則SKIPIF1<0,所以SKIPIF1<0,所以SKIPIF1<0,解得SKIPIF1<0,所以SKIPIF1<0,此時(shí)函數(shù)SKIPIF1<0與SKIPIF1<0的圖象恰有3個(gè)交點(diǎn);當(dāng)SKIPIF1<0時(shí),兩函數(shù)圖象至多有兩個(gè)交點(diǎn).所以若要使函數(shù)SKIPIF1<0有4個(gè)零點(diǎn),則SKIPIF1<0.故選:C.8.已知函數(shù)SKIPIF1<0,設(shè)方程SKIPIF1<0的根從小到大依次為SKIPIF1<0,則數(shù)列SKIPIF1<0的前n項(xiàng)和為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【答案】C【解析】由SKIPIF1<0的定義知,當(dāng)SKIPIF1<0時(shí),SKIPIF1<0,當(dāng)SKIPIF1<0時(shí),SKIPIF1<0單調(diào)遞增,當(dāng)時(shí),SKIPIF1<0單調(diào)遞減,其中SKIPIF1<0,SKIPIF1<0,又函數(shù)SKIPIF1<0是SKIPIF1<0上的增函數(shù),因此方程SKIPIF1<0的解為SKIPIF1<0,SKIPIF1<0,所以SKIPIF1<0SKIPIF1<0,選C.二、選擇題:本題共4小題,每小題5分,共20分.在每小題給出的選項(xiàng)中,有多項(xiàng)符合題目要求.全部選對(duì)的得5分,部分選對(duì)的得2分,有選錯(cuò)的得0分.9.設(shè)SKIPIF1<0,SKIPIF1<0為正數(shù),若直線SKIPIF1<0被圓SKIPIF1<0截得弦長為4,則()A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<0【答案】BCD【解析】由SKIPIF1<0可得SKIPIF1<0,故圓的直徑是4,所以直線過圓心SKIPIF1<0,即SKIPIF1<0,故B正確;又SKIPIF1<0,SKIPIF1<0均為正數(shù),所以由均值不等式SKIPIF1<0,當(dāng)且僅當(dāng)SKIPIF1<0時(shí)等號(hào)成立;故C正確;又SKIPIF1<0SKIPIF1<0SKIPIF1<0,當(dāng)且僅當(dāng)SKIPIF1<0,即SKIPIF1<0,即SKIPIF1<0時(shí),等號(hào)成立,故D正確.故選:BCD10.已知拋物線SKIPIF1<0,SKIPIF1<0為SKIPIF1<0的焦點(diǎn),過焦點(diǎn)SKIPIF1<0且傾斜角為SKIPIF1<0的直線交拋物線SKIPIF1<0于SKIPIF1<0,SKIPIF1<0兩點(diǎn),則下列說法正確的是()A.SKIPIF1<0在點(diǎn)SKIPIF1<0處的切線方程為SKIPIF1<0B.SKIPIF1<0C.過拋物線SKIPIF1<0準(zhǔn)線上的任意一點(diǎn)SKIPIF1<0作SKIPIF1<0的切線,則過兩切點(diǎn)SKIPIF1<0,SKIPIF1<0的弦必過焦點(diǎn)SKIPIF1<0D.SKIPIF1<0【答案】ACD【解析】對(duì)于A,根據(jù)題意可知SKIPIF1<0,拋物線在點(diǎn)SKIPIF1<0處的切線斜率存在,設(shè)點(diǎn)SKIPIF1<0處的切線方程為SKIPIF1<0,與SKIPIF1<0聯(lián)立,得SKIPIF1<0,由SKIPIF1<0,得SKIPIF1<0,即SKIPIF1<0,則SKIPIF1<0,解得SKIPIF1<0,故切線方程為SKIPIF1<0,即SKIPIF1<0,故A正確.對(duì)于B,當(dāng)直線SKIPIF1<0的斜率不存在時(shí),直線SKIPIF1<0的方程為SKIPIF1<0,由題意SKIPIF1<0,則SKIPIF1<0,故B錯(cuò)誤.對(duì)于C,設(shè)點(diǎn)SKIPIF1<0,過點(diǎn)SKIPIF1<0作拋物線的切線,切點(diǎn)為SKIPIF1<0,SKIPIF1<0兩邊分別求導(dǎo)得SKIPIF1<0,SKIPIF1<0,∴SKIPIF1<0,即SKIPIF1<0.∵SKIPIF1<0,∴切點(diǎn)有兩個(gè),設(shè)為SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0,SKIPIF1<0,當(dāng)SKIPIF1<0時(shí),SKIPIF1<0,則SKIPIF1<0,SKIPIF1<0或SKIPIF1<0,SKIPIF1<0,點(diǎn)SKIPIF1<0,SKIPIF1<0的坐標(biāo)為SKIPIF1<0,點(diǎn)SKIPIF1<0,SKIPIF1<0,SKIPIF1<0共線.當(dāng)SKIPIF1<0時(shí),SKIPIF1<0SKIPIF1<0,則SKIPIF1<0,SKIPIF1<0,SKIPIF1<0三點(diǎn)共線,∴過兩切點(diǎn)SKIPIF1<0,SKIPIF1<0的弦必過焦點(diǎn),故C正確.對(duì)于D,當(dāng)直線SKIPIF1<0的斜率不存在時(shí),SKIPIF1<0,SKIPIF1<0,此時(shí)SKIPIF1<0;當(dāng)直線SKIPIF1<0的斜率存在時(shí),可知直線SKIPIF1<0的斜率為SKIPIF1<0,則直線SKIPIF1<0的方程為SKIPIF1<0,聯(lián)立SKIPIF1<0,得SKIPIF1<0,則SKIPIF1<0,SKIPIF1<0.SKIPIF1<0SKIPIF1<0,故D正確,故選:ACD.11.已知函數(shù)SKIPIF1<0,則下列說法正確的是()A.SKIPIF1<0有且只有一個(gè)極值點(diǎn)B.設(shè)SKIPIF1<0,則SKIPIF1<0與SKIPIF1<0的單調(diào)性相同C.SKIPIF1<0有且只有兩個(gè)零點(diǎn)D.SKIPIF1<0在SKIPIF1<0上單調(diào)遞增【答案】ACD【解析】解:由題知,SKIPIF1<0,SKIPIF1<0,所以SKIPIF1<0在SKIPIF1<0上單調(diào)遞增,當(dāng)SKIPIF1<0時(shí),SKIPIF1<0;當(dāng)SKIPIF1<0時(shí),SKIPIF1<0,所以存在SKIPIF1<0,使得SKIPIF1<0,所以函數(shù)SKIPIF1<0在SKIPIF1<0上單調(diào)遞減,在SKIPIF1<0上單調(diào)遞增,所以SKIPIF1<0有且只有一個(gè)極值點(diǎn),故A正確;因?yàn)镾KIPIF1<0,所以SKIPIF1<0,所以SKIPIF1<0所以SKIPIF1<0,故SKIPIF1<0的一個(gè)極值點(diǎn)為SKIPIF1<0,所以SKIPIF1<0與SKIPIF1<0的單調(diào)性不相同,故B錯(cuò)誤;因?yàn)镾KIPIF1<0有且只有一個(gè)極值點(diǎn)SKIPIF1<0,SKIPIF1<0,且SKIPIF1<0,所以SKIPIF1<0在SKIPIF1<0和SKIPIF1<0上各有一個(gè)零點(diǎn),所以SKIPIF1<0有且只有兩個(gè)零點(diǎn),故C正確;因?yàn)镾KIPIF1<0與SKIPIF1<0在SKIPIF1<0上都是單調(diào)遞增,所以SKIPIF1<0在SKIPIF1<0上單調(diào)遞增,D正確.故選:ACD.12.如圖所示,在棱長為SKIPIF1<0的正方體SKIPIF1<0中,過對(duì)角線SKIPIF1<0的一個(gè)平面交棱SKIPIF1<0于點(diǎn)SKIPIF1<0,交棱SKIPIF1<0于點(diǎn)SKIPIF1<0,得四邊形SKIPIF1<0,在以下結(jié)論中,正確的是()A.四邊形SKIPIF1<0有可能是梯形B.四邊形SKIPIF1<0在底面SKIPIF1<0內(nèi)的投影一定是正方形C.四邊形SKIPIF1<0有可能垂直于平面SKIPIF1<0D.四邊形SKIPIF1<0面積的最小值為SKIPIF1<0【答案】BCD【解析】過SKIPIF1<0作平面與正方體SKIPIF1<0的截面為四邊形SKIPIF1<0,如圖所示,因?yàn)槠矫鍿KIPIF1<0平面SKIPIF1<0,且平面SKIPIF1<0平面SKIPIF1<0.平面SKIPIF1<0平面SKIPIF1<0,因此,同理SKIPIF1<0,故四邊形SKIPIF1<0為平行四邊形,因此A錯(cuò)誤;對(duì)于選項(xiàng)B,四邊形SKIPIF1<0在底面SKIPIF1<0內(nèi)的投影一定是正方形SKIPIF1<0,因此B正確;對(duì)于選項(xiàng)C,當(dāng)點(diǎn)SKIPIF1<0分別為SKIPIF1<0的中點(diǎn)時(shí),SKIPIF1<0平面SKIPIF1<0,又SKIPIF1<0平面SKIPIF1<0,則平面SKIPIF1<0平面SKIPIF1<0,因此C正確;對(duì)于選項(xiàng)D,當(dāng)SKIPIF1<0點(diǎn)到線段SKIPIF1<0的距離最小時(shí),此時(shí)平行四邊形SKIPIF1<0的面積最小,此時(shí)點(diǎn)SKIPIF1<0分別為SKIPIF1<0的中點(diǎn),此時(shí)最小值為SKIPIF1<0,因此D正確.故選:BCD三、填空題:本題共4小題,每小題5分,共20分.13.已知在等腰直角SKIPIF1<0中,SKIPIF1<0,若SKIPIF1<0,則SKIPIF1<0等于________.【答案】SKIPIF1<0【解析】等腰直角SKIPIF1<0中,SKIPIF1<0,可得SKIPIF1<0SKIPIF1<0,SKIPIF1<0SKIPIF1<0SKIPIF1<0,故答案為:SKIPIF1<0.14.新型冠狀病毒蔓延以來,世界各國都在研制疫苗,某專家認(rèn)為,某種抗病毒藥品對(duì)新型冠狀病毒具有抗病毒、抗炎作用,假如規(guī)定每天早上7:00和晚上7:00各服藥一次,每次服用該藥藥量700毫克具有抗病毒功效,若人的腎臟每12小時(shí)從體內(nèi)濾出這種藥的70%,該藥在人體內(nèi)含量超過1000毫克,就將產(chǎn)生副作用,若人長期服用這種藥,則這種藥__________(填“會(huì)”或者“不會(huì)”)對(duì)人體產(chǎn)生副作用.【答案】不會(huì)【解析】由題意第一次服藥后,經(jīng)過12小時(shí)后,體內(nèi)藥物含量SKIPIF1<0,經(jīng)過24小時(shí)后,體內(nèi)藥物含量SKIPIF1<0,以此類推,一次服藥后體內(nèi)藥物含量構(gòu)成以SKIPIF1<0為公比的等比數(shù)列,即SKIPIF1<0,所以第SKIPIF1<0次服藥后,體內(nèi)藥物的含量為:SKIPIF1<0SKIPIF1<0,當(dāng)SKIPIF1<0時(shí),藥在體內(nèi)的含量無限接近1000,該藥在人體內(nèi)含量不超過1000毫克,不會(huì)產(chǎn)生副作用.故答案為:不會(huì)15.已知雙曲線SKIPIF1<0:SKIPIF1<0與拋物線SKIPIF1<0:SKIPIF1<0的焦點(diǎn)SKIPIF1<0重合,過點(diǎn)SKIPIF1<0作直線SKIPIF1<0與拋物線SKIPIF1<0交于SKIPIF1<0、SKIPIF1<0兩點(diǎn)(SKIPIF1<0點(diǎn)在SKIPIF1<0軸上方)且滿足SKIPIF1<0,若直線SKIPIF1<0只與雙曲線右支相交于兩點(diǎn),則雙曲線SKIPIF1<0的離心率SKIPIF1<0的取值范圍是______.【答案】SKIPIF1<0【解析】設(shè)直線SKIPIF1<0的傾斜角SKIPIF1<0,直線SKIPIF1<0與拋物線SKIPIF1<0交于SKIPIF1<0、SKIPIF1<0兩點(diǎn)(SKIPIF1<0點(diǎn)在SKIPIF1<0軸上方),則SKIPIF1<0為銳角,焦點(diǎn)SKIPIF1<0,準(zhǔn)線SKIPIF1<0,準(zhǔn)線與SKIPIF1<0軸交點(diǎn)記為SKIPIF1<0,過SKIPIF1<0、SKIPIF1<0分別向準(zhǔn)線作垂線,垂足分別為SKIPIF1<0、SKIPIF1<0,過SKIPIF1<0向SKIPIF1<0作垂線,垂足為SKIPIF1<0,設(shè)直線SKIPIF1<0與SKIPIF1<0軸交點(diǎn)記為SKIPIF1<0,過SKIPIF1<0向SKIPIF1<0軸作垂線,垂足為SKIPIF1<0,由拋物線的定義SKIPIF1<0,因?yàn)镾KIPIF1<0,所以SKIPIF1<0,∴SKIPIF1<0,SKIPIF1<0因?yàn)镾KIPIF1<0,所以SKIPIF1<0SKIPIF1<0,由SKIPIF1<0,則SKIPIF1<0,由直線SKIPIF1<0只與雙曲線右支相交于兩點(diǎn),則SKIPIF1<0,則SKIPIF1<0,由SKIPIF1<0,則SKIPIF1<0.故答案為:SKIPIF1<0.16.定義在SKIPIF1<0上的函數(shù)SKIPIF1<0滿足:SKIPIF1<0,函數(shù)SKIPIF1<0,若SKIPIF1<0,則SKIPIF1<0______.【答案】SKIPIF1<0【解析】∵SKIPIF1<0,∴SKIPIF1<0,故SKIPIF1<0;令SKIPIF1<0,則SKIPIF1<0,而SKIPIF1<0,即SKIPIF1<0,該函數(shù)是奇函數(shù),故SKIPIF1<0;故SKIPIF1<0SKIPIF1<0,又∵SKIPIF1<0,∴SKIPIF1<0.故答案為:SKIPIF1<0.四、解答題:本題共6小題,共70分.解答應(yīng)寫出文字說明、證明過程或演算步驟.17.在①SKIPIF1<0,②SKIPIF1<0,③SKIPIF1<0,這三個(gè)條件中任選一個(gè),補(bǔ)充在下面的問題中,并解決該問題.已知SKIPIF1<0的內(nèi)角SKIPIF1<0,SKIPIF1<0,SKIPIF1<0的對(duì)邊分別為SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,___________,SKIPIF1<0,SKIPIF1<0,求SKIPIF1<0的面積.【答案】條件選擇見解析;SKIPIF1<0的面積為SKIPIF1<0.【解析】解:(1)若選擇①,SKIPIF1<0由余弦定理,SKIPIF1<0,因?yàn)镾KIPIF1<0,所以SKIPIF1<0;由正弦定理SKIPIF1<0,得SKIPIF1<0,因?yàn)镾KIPIF1<0,SKIPIF1<0,所以SKIPIF1<0,所以SKIPIF1<0所以SKIPIF1<0.(2)若選擇②SKIPIF1<0,則SKIPIF1<0,因?yàn)镾KIPIF1<0,所以SKIPIF1<0,因?yàn)镾KIPIF1<0,所以SKIPIF1<0;由正弦定理SKIPIF1<0,得SKIPIF1<0,因?yàn)镾KIPIF1<0,SKIPIF1<0,所以SKIPIF1<0,所以SKIPIF1<0,所以SKIPIF1<0.(3)若選擇③SKIPIF1<0,則SKIPIF1<0,所以SKIPIF1<0,因?yàn)镾KIPIF1<0,所以SKIPIF1<0,所以SKIPIF1<0,所以SKIPIF1<0;由正弦定理SKIPIF1<0,得SKIPIF1<0,因?yàn)镾KIPIF1<0,SKIPIF1<0,所以SKIPIF1<0,所以SKIPIF1<0,所以SKIPIF1<0.18.已知數(shù)列SKIPIF1<0對(duì)任意的SKIPIF1<0都滿足SKIPIF1<0.(1)求數(shù)列SKIPIF1<0的通項(xiàng)公式;(2)令SKIPIF1<0,求數(shù)列SKIPIF1<0的前SKIPIF1<0項(xiàng)和為SKIPIF1<0.【答案】(1)SKIPIF1<0;(2)SKIPIF1<0.【解析】(1)由題意,數(shù)列SKIPIF1<0滿足SKIPIF1<0,當(dāng)SKIPIF1<0時(shí),SKIPIF1<0,兩式相減,可得SKIPIF1<0,即SKIPIF1<0,又由當(dāng)SKIPIF1<0時(shí),SKIPIF1<0,滿足上式,所以數(shù)列SKIPIF1<0的通項(xiàng)公式為SKIPIF1<0.(2)由(1)可得SKIPIF1<0,所以SKIPIF1<0,即數(shù)列SKIPIF1<0的前SKIPIF1<0項(xiàng)和為SKIPIF1<0.19.在一次大范圍的隨機(jī)知識(shí)問卷調(diào)查中,通過隨機(jī)抽樣,得到參加問卷調(diào)查的100人的得分統(tǒng)計(jì)結(jié)果如下表所示:得分SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0頻數(shù)213212524114(1)由頻數(shù)分布表可以大致認(rèn)為,此次問卷調(diào)查的得分SKIPIF1<0,SKIPIF1<0近似為這100人得分的平均值(同一組中的數(shù)據(jù)用該組區(qū)間的左端點(diǎn)值作代表).①求SKIPIF1<0的值;②若SKIPIF1<0,求SKIPIF1<0的值;(2)在(1)的條件下,為此次參加問卷調(diào)查的市民制定如下獎(jiǎng)勵(lì)方案:①得分不低于SKIPIF1<0的可以獲贈(zèng)2次隨機(jī)話費(fèi),得分低于SKIPIF1<0的可以獲贈(zèng)1次隨機(jī)話費(fèi);②每次獲贈(zèng)的隨機(jī)話費(fèi)和對(duì)應(yīng)的概率為:贈(zèng)送話費(fèi)的金額(單位:元)2050概率SKIPIF1<0SKIPIF1<0現(xiàn)有市民甲參加此次問卷調(diào)查,記SKIPIF1<0(單位:元)為該市民參加問卷調(diào)查獲贈(zèng)的話費(fèi),求SKIPIF1<0的分布列與數(shù)學(xué)期望.【答案】(1)①SKIPIF1<0;②SKIPIF1<0;(2)分布列答案見解析,數(shù)學(xué)期望為41.25元.【解析】解:(1)①由題意得:SKIPIF1<0,SKIPIF1<0,②SKIPIF1<0,SKIPIF1<0由正態(tài)分布曲線的對(duì)稱性得,SKIPIF1<0,解得SKIPIF1<0;(2)由題意得,SKIPIF1<0,即獲贈(zèng)1次和2次隨機(jī)話費(fèi)的概率均為SKIPIF1<0,故獲贈(zèng)話費(fèi)的SKIPIF1<0的所有可能取值為20,40,50,70,100SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0.SKIPIF1<0的分布列為:SKIPIF1<020405070100SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0元.所以SKIPIF1<0的數(shù)學(xué)期望為41.25元.20.如圖,四邊形SKIPIF1<0為正方形,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0為銳角三角形,SKIPIF1<0,SKIPIF1<0分別是邊SKIPIF1<0,SKIPIF1<0的中點(diǎn),直線SKIPIF1<0與平面SKIPIF1<0所成的角為SKIPIF1<0.(1)求證:SKIPIF1<0平面SKIPIF1<0;(2)若SKIPIF1<0為銳角三角形,求二面角SKIPIF1<0的余弦值.【答案】(1)證明見解析;(2)SKIPIF1<0.【解析】解:(1)證明:∵SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,∴SKIPIF1<0平面SKIPIF1<0.∴平面SKIPIF1<0平面SKIPIF1<0,因?yàn)镾KIPIF1<0為銳角三角形,∴點(diǎn)SKIPIF1<0在平面SKIPIF1<0的射影在線段SKIPIF1<0上,∴SKIPIF1<0為直線SKIPIF1<0與平面SKIPIF1<0所成的角,即SKIPIF1<0.又∵SKIPIF1<0,∴SKIPIF1<0為等邊三角形.∵點(diǎn)SKIPIF1<0為SKIPIF1<0的中點(diǎn),∴SKIPIF1<0.又SKIPIF1<0,SKIPIF1<0,∴SKIPIF1<0平面SKIPIF1<0.∵SKIPIF1<0平面SKIPIF1<0,∴SKIPIF1<0.∵SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,∴SKIPIF1<0,∴SKIPIF1<0,∴SKIPIF1<0,∴SKIPIF1<0.∵SKIPIF1<0,SKIPIF1<0平面SKIPIF1<0,∴SKIPIF1<0平面SKIPIF1<0.(2)取SKIPIF1<0的中點(diǎn)為SKIPIF1<0,SKIPIF1<0的中點(diǎn)為SKIPIF1<0,連接SKIPIF1<0,SKIPIF1<0.∵SKIPIF1<0為等邊三角形,∴SKIPIF1<0.∵SKIPIF1<0平面SKIPIF1<0,SKIPIF1<0平面SKIPIF1<0,∴SKIPIF1<0.又∵SKIPIF1<0,∴SKIPIF1<0平面SKIPIF1<0,∴SKIPIF1<0.∵點(diǎn)SKIPIF1<0,SKIPIF1<0分別為SKIPIF1<0和SKIPIF1<0的中點(diǎn),∴SKIPIF1<0,∴SKIPIF1<0平面SKIPIF1<0,∴SKIPIF1<0.∴SKIPIF1<0,SKIPIF1<0,SKIPIF1<0兩兩垂直,故以點(diǎn)SKIPIF1<0為坐標(biāo)原點(diǎn),以SKIPIF1<0,SKIPIF1<0,SKIPIF1<0所在直線分別為SKIPIF1<0軸?SKIPIF1<0軸?SKIPIF1<0軸建立如圖所示空間直角坐標(biāo)系.設(shè)SKIPIF1<0,則SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,∴SKIPIF1<0,SKIPIF1<0,設(shè)平面SKIPIF1<0的法向量為SKIPIF1<0,則SKIPIF1<0,SKIPIF1<0,∴SKIPIF1<0,解得SKIPIF1<0.不妨設(shè)SKIPIF1<0,則SKIPIF1<0.由(1)可得SKIPIF1<0為平面SKIPIF1<0的一個(gè)法向量.又∵SKIPIF1<0,∴SKIPIF1<0

溫馨提示

  • 1. 本站所有資源如無特殊說明,都需要本地電腦安裝OFFICE2007和PDF閱讀器。圖紙軟件為CAD,CAXA,PROE,UG,SolidWorks等.壓縮文件請(qǐng)下載最新的WinRAR軟件解壓。
  • 2. 本站的文檔不包含任何第三方提供的附件圖紙等,如果需要附件,請(qǐng)聯(lián)系上傳者。文件的所有權(quán)益歸上傳用戶所有。
  • 3. 本站RAR壓縮包中若帶圖紙,網(wǎng)頁內(nèi)容里面會(huì)有圖紙預(yù)覽,若沒有圖紙預(yù)覽就沒有圖紙。
  • 4. 未經(jīng)權(quán)益所有人同意不得將文件中的內(nèi)容挪作商業(yè)或盈利用途。
  • 5. 人人文庫網(wǎng)僅提供信息存儲(chǔ)空間,僅對(duì)用戶上傳內(nèi)容的表現(xiàn)方式做保護(hù)處理,對(duì)用戶上傳分享的文檔內(nèi)容本身不做任何修改或編輯,并不能對(duì)任何下載內(nèi)容負(fù)責(zé)。
  • 6. 下載文件中如有侵權(quán)或不適當(dāng)內(nèi)容,請(qǐng)與我們聯(lián)系,我們立即糾正。
  • 7. 本站不保證下載資源的準(zhǔn)確性、安全性和完整性, 同時(shí)也不承擔(dān)用戶因使用這些下載資源對(duì)自己和他人造成任何形式的傷害或損失。

最新文檔

評(píng)論

0/150

提交評(píng)論