北京市東城區(qū)2022-2023學(xué)年高一上學(xué)期期末統(tǒng)一檢測數(shù)學(xué)試題(含答案詳解)_第1頁
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北京市東城區(qū)2022-2023學(xué)年高一上學(xué)期期末統(tǒng)一檢測數(shù)學(xué)試題(含答案詳解)_第3頁
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東城區(qū)2022-2023學(xué)年度第一學(xué)期期末統(tǒng)一檢測高一數(shù)學(xué)本試卷共4頁,滿分100分.考試時長120分鐘.考生務(wù)必將答案答在答題卡上,在試卷上作答無效.考試結(jié)束后,將本試卷和答題卡一并交回.第一部分(選擇題共30分)一、選擇題共10小題,每小題3分,共30分.在每小題列出的四個選項中,選出符合題目要求的一項.1.已知集合SKIPIF1<0,則SKIPIF1<0()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【答案】A【解析】【分析】根據(jù)交集的定義,即可求解.【詳解】因為SKIPIF1<0,所以SKIPIF1<0.故選:A2.不等式SKIPIF1<0的解集是()A.SKIPIF1<0或SKIPIF1<0 B.SKIPIF1<0或SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【答案】B【解析】【分析】直接解出不等式即可.【詳解】SKIPIF1<0,解得SKIPIF1<0或SKIPIF1<0,故解集為SKIPIF1<0或SKIPIF1<0,故選:B.3.下列函數(shù)中,在區(qū)間SKIPIF1<0上單調(diào)遞減的是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【答案】C【解析】【分析】根據(jù)指數(shù)函數(shù),對數(shù)函數(shù),冪函數(shù)的單調(diào)性即可得到答案.【詳解】根據(jù)冪函數(shù)圖像與性質(zhì)可知,對A選項SKIPIF1<0在SKIPIF1<0單調(diào)遞增,故A錯誤,對D選項SKIPIF1<0在SKIPIF1<0單調(diào)性遞增,故D錯誤,根據(jù)指數(shù)函數(shù)圖像與性質(zhì)可知SKIPIF1<0在SKIPIF1<0單調(diào)遞減,故C正確,根據(jù)對數(shù)函數(shù)圖像與性質(zhì)可知SKIPIF1<0在SKIPIF1<0單調(diào)性遞增.故選:C.4.命題“SKIPIF1<0”的否定是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【答案】A【解析】【分析】根據(jù)存在命題的否定即可得到答案.【詳解】根據(jù)存在命題的否定可知,存在變?nèi)我?,范圍不變,結(jié)論相反,故其否定為SKIPIF1<0.故選:A.5.已知SKIPIF1<0,則SKIPIF1<0的最小值為()A.2 B.3 C.4 D.5【答案】D【解析】【分析】利用基本不等式的性質(zhì)求解即可.【詳解】因為SKIPIF1<0,所以SKIPIF1<0.當(dāng)且僅當(dāng)SKIPIF1<0,即SKIPIF1<0時等號成立.所以SKIPIF1<0的最小值為SKIPIF1<0.故選:D6.函數(shù)SKIPIF1<0的圖象關(guān)于()A.x軸對稱 B.y軸對稱 C.原點對稱 D.直線SKIPIF1<0對稱【答案】C【解析】【分析】求出SKIPIF1<0,可知SKIPIF1<0,可得函數(shù)為奇函數(shù),進而得到答案.【詳解】函數(shù)SKIPIF1<0的定義域為R,SKIPIF1<0,所以有SKIPIF1<0,所以SKIPIF1<0為奇函數(shù),圖象關(guān)于原點對稱.故選:C.7.“SKIPIF1<0”是“SKIPIF1<0”的()A.充分不必要條件 B.必要不充分條件 C.充分必要條件 D.既不充分也不必要條件【答案】B【解析】【分析】根據(jù)正弦函數(shù)的性質(zhì)及充分條件、必要條件即可求解.【詳解】SKIPIF1<0推不出SKIPIF1<0(舉例,SKIPIF1<0),而SKIPIF1<0,SKIPIF1<0“SKIPIF1<0”是“SKIPIF1<0”的必要不充分條件,故選:B8.已知函數(shù)SKIPIF1<0,對a,b滿足SKIPIF1<0且SKIPIF1<0,則下面結(jié)論一定正確的是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【答案】D【解析】【分析】由對數(shù)函數(shù)的運算性質(zhì)可知SKIPIF1<0移項化簡即可得.【詳解】因為函數(shù)SKIPIF1<0,對a,b滿足SKIPIF1<0且SKIPIF1<0,所以SKIPIF1<0,則SKIPIF1<0所以SKIPIF1<0,即SKIPIF1<0,解得SKIPIF1<0故選:D9.記地球與太陽的平均距離為R,地球公轉(zhuǎn)周期為T,萬有引力常量為G,根據(jù)萬有引力定律和牛頓運動定律知:太陽的質(zhì)量SKIPIF1<0.已知SKIPIF1<0,由上面的數(shù)據(jù)可以計算出太陽的質(zhì)量約為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【答案】A【解析】【分析】利用對數(shù)運算性質(zhì)計算即可.【詳解】因為SKIPIF1<0,所以由SKIPIF1<0得:SKIPIF1<0SKIPIF1<0,即SKIPIF1<0,又SKIPIF1<0,所以SKIPIF1<0.故選:A.10.已知實數(shù)SKIPIF1<0互不相同,對SKIPIF1<0滿足SKIPIF1<0,則對SKIPIF1<0()A.2022 B.SKIPIF1<0 C.2023 D.SKIPIF1<0【答案】D【解析】【分析】根據(jù)代數(shù)基本定理進行求解即可..【詳解】國為SKIPIF1<0滿足SKIPIF1<0,所以SKIPIF1<0可以看成方程SKIPIF1<0的SKIPIF1<0個不等實根,根據(jù)代數(shù)基本定理可知:對于任意實數(shù)SKIPIF1<0都有以下恒等式,SKIPIF1<0,令SKIPIF1<0,于有SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0SKIPIF1<0SKIPIF1<0,SKIPIF1<0SKIPIF1<0,SKIPIF1<0,所以SKIPIF1<0,故選:D【點睛】關(guān)鍵點睛:根據(jù)代數(shù)基本定理是解題的關(guān)鍵.第二部分(非選擇題共70分)二、填空題共5小題,每小題4分,共20分.11.函數(shù)SKIPIF1<0的定義域是__________.【答案】SKIPIF1<0【解析】【分析】根據(jù)對數(shù)真數(shù)大于零可構(gòu)造不等式求得結(jié)果.【詳解】由SKIPIF1<0得:SKIPIF1<0,SKIPIF1<0的定義域為SKIPIF1<0.故答案為:SKIPIF1<0.12.SKIPIF1<0__________.【答案】6【解析】【分析】根據(jù)給定條件,利用指數(shù)運算、對數(shù)運算計算作答.詳解】SKIPIF1<0.故答案為:613.若SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0______.【答案】SKIPIF1<0【解析】【分析】由SKIPIF1<0,可知SKIPIF1<0,再結(jié)合SKIPIF1<0,及SKIPIF1<0,可求出答案.【詳解】因為SKIPIF1<0,所以SKIPIF1<0,所以SKIPIF1<0,SKIPIF1<0.故答案為:SKIPIF1<0.【點睛】本題考查同角三角函數(shù)的基本關(guān)系的應(yīng)用,考查學(xué)生的計算求解能力,屬于基礎(chǔ)題.14.如圖,單位圓被點SKIPIF1<0分為12等份,其中SKIPIF1<0.角SKIPIF1<0的始邊與x軸的非負半軸重合,若SKIPIF1<0的終邊經(jīng)過點SKIPIF1<0,則SKIPIF1<0__________;若SKIPIF1<0,則角SKIPIF1<0的終邊與單位圓交于點__________.(從SKIPIF1<0中選擇,寫出所有滿足要求的點)【答案】①.SKIPIF1<0②.SKIPIF1<0【解析】【分析】求出終邊經(jīng)過SKIPIF1<0則對應(yīng)的角SKIPIF1<0和SKIPIF1<0的關(guān)系.【詳解】SKIPIF1<0,所以終邊經(jīng)過SKIPIF1<0則SKIPIF1<0角SKIPIF1<0的始邊與x軸的非負半軸重合,若SKIPIF1<0的終邊經(jīng)過點SKIPIF1<0,則SKIPIF1<0,所以SKIPIF1<0SKIPIF1<0,即SKIPIF1<0或SKIPIF1<0即SKIPIF1<0或SKIPIF1<0經(jīng)過點SKIPIF1<0故答案為:SKIPIF1<0;SKIPIF1<015.已知函數(shù)SKIPIF1<0,①當(dāng)SKIPIF1<0時,SKIPIF1<0在SKIPIF1<0上的最小值為__________;②若SKIPIF1<0有2個零點,則實數(shù)a取值范圍是__________.【答案】①.SKIPIF1<0;②.SKIPIF1<0或SKIPIF1<0.【解析】【分析】①根據(jù)函數(shù)式分段確定函數(shù)的單調(diào)性后可得最小值;②結(jié)合函數(shù)SKIPIF1<0和SKIPIF1<0的圖象,根據(jù)分段函數(shù)的定義可得參數(shù)范圍.【詳解】①SKIPIF1<0,SKIPIF1<0時,SKIPIF1<0是增函數(shù),SKIPIF1<0,SKIPIF1<0時,SKIPIF1<0是增函數(shù),因此SKIPIF1<0,所以SKIPIF1<0時,SKIPIF1<0的最小值是SKIPIF1<0;②作出函數(shù)SKIPIF1<0和SKIPIF1<0的圖象,它們與SKIPIF1<0軸共有三個交點SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,由圖象知SKIPIF1<0有2個零點,則SKIPIF1<0或SKIPIF1<0.故答案為:SKIPIF1<0;SKIPIF1<0或SKIPIF1<0.三、解答題共5小題,共50分.解答應(yīng)寫出文字說明、演算步驟或證明過程.16.已知函數(shù)SKIPIF1<0.(1)求SKIPIF1<0的值;(2)當(dāng)SKIPIF1<0時,求SKIPIF1<0的值域.【答案】(1)SKIPIF1<0;(2)SKIPIF1<0.【解析】【分析】(1)根據(jù)誘導(dǎo)公式和特殊角三角函數(shù)值求解;(2)利用余弦函數(shù)性質(zhì)及不等式性質(zhì)求SKIPIF1<0的值域.【小問1詳解】因為SKIPIF1<0,所以SKIPIF1<0,【小問2詳解】由(1)SKIPIF1<0,又SKIPIF1<0,所以SKIPIF1<0,所以SKIPIF1<0,故當(dāng)SKIPIF1<0時,SKIPIF1<0的值域為SKIPIF1<0.17.已知關(guān)于x的不等式SKIPIF1<0的解集為A.(1)當(dāng)SKIPIF1<0時,求集合A;(2)若集合SKIPIF1<0,求a的值;(3)若SKIPIF1<0,直接寫出a的取值范圍.【答案】(1)SKIPIF1<0;(2)SKIPIF1<0;(3)SKIPIF1<0.【解析】【分析】(1)直接解不等式可得;(2)由題意得SKIPIF1<0是方程SKIPIF1<0的根,代入后可得SKIPIF1<0值;(3)SKIPIF1<0代入后不等式不成立可得.【小問1詳解】SKIPIF1<0時,不等式為SKIPIF1<0,即SKIPIF1<0,SKIPIF1<0,∴SKIPIF1<0;【小問2詳解】原不等式化為SKIPIF1<0,由題意SKIPIF1<0,解得SKIPIF1<0,SKIPIF1<0時原不等式化為SKIPIF1<0,SKIPIF1<0或SKIPIF1<0,滿足題意.所以SKIPIF1<0;【小問3詳解】SKIPIF1<0,則SKIPIF1<0,解得SKIPIF1<0.18.函數(shù)SKIPIF1<0的定義域為SKIPIF1<0,若對任意的SKIPIF1<0,均有SKIPIF1<0.(1)若SKIPIF1<0,證明:SKIPIF1<0;(2)若對SKIPIF1<0,證明:SKIPIF1<0在SKIPIF1<0上為增函數(shù);(3)若SKIPIF1<0,直接寫出一個滿足已知條件的SKIPIF1<0的解析式.【答案】(1)證明過程見解析(2)證明過程見解析(3)SKIPIF1<0,SKIPIF1<0(答案不唯一)【解析】【分析】(1)賦值法得到SKIPIF1<0;(2)賦值法,令SKIPIF1<0,且SKIPIF1<0,從而得到SKIPIF1<0,證明出函數(shù)的單調(diào)性;(3)從任意的SKIPIF1<0,均有SKIPIF1<0,可得到函數(shù)增長速度越來越快,故下凸函數(shù)符合要求,構(gòu)造出符合要求的函數(shù),并進行證明【小問1詳解】令SKIPIF1<0,則SKIPIF1<0,因為SKIPIF1<0,所以SKIPIF1<0;【小問2詳解】令SKIPIF1<0,且SKIPIF1<0,則SKIPIF1<0,所以SKIPIF1<0,故SKIPIF1<0,因為對SKIPIF1<0,所以SKIPIF1<0,故SKIPIF1<0,即SKIPIF1<0,SKIPIF1<0在SKIPIF1<0上為增函數(shù);【小問3詳解】構(gòu)造SKIPIF1<0,SKIPIF1<0,滿足SKIPIF1<0,且滿足對任意的SKIPIF1<0,SKIPIF1<0,理由如下:SKIPIF1<0,因為SKIPIF1<0,故SKIPIF1<0,SKIPIF1<0,故對任意的SKIPIF1<0,SKIPIF1<0.19.已知函數(shù)SKIPIF1<0.(1)若SKIPIF1<0為偶函數(shù),求a的值;(2)從以下三個條件中選擇兩個作為已知條件,記所有滿足條件a的值構(gòu)成集合A,若SKIPIF1<0,求A.條件①:SKIPIF1<0是增函數(shù);條件②:對于SKIPIF1<0恒成立;條件③:SKIPIF1<0,使得SKIPIF1<0.【答案】(1)SKIPIF1<0;(2)選①②,不存在SKIPIF1<0;選①③,SKIPIF1<0;選②③,SKIPIF1<0.【解析】【分析】(1)由偶函數(shù)的定義求解;(2)選①②,SKIPIF1<0時,由復(fù)合函數(shù)單調(diào)性得SKIPIF1<0是增函數(shù),SKIPIF1<0時,由單調(diào)性的定義得函數(shù)的單調(diào)性,然后在SKIPIF1<0時,由SKIPIF1<0有解,說明不滿足②SKIPIF1<0不存在;選①③,同選①②,由單調(diào)性得SKIPIF1<0,然后則函數(shù)的最大值不大于4得SKIPIF1<0的范圍,綜合后得結(jié)論;選②③,先確定SKIPIF1<0恒成立時SKIPIF1<0的范圍,再換元確定新函數(shù)的單調(diào)性得最大值的可能值,從而可得參數(shù)范圍.【小問1詳解】SKIPIF1<0是偶函數(shù),則SKIPIF1<0,SKIPIF1<0恒成立,∴SKIPIF1<0,即SKIPIF1<0;【小問2詳解】若選①②,SKIPIF1<0(SKIPIF1<0),若SKIPIF1<0,則SKIPIF1<0是增函數(shù),由SKIPIF1<0得SKIPIF1<0,因此SKIPIF1<0不恒成立,不合題意,若SKIPIF1<0,設(shè)SKIPIF1<0,則SKIPIF1<0,SKIPIF1<0SKIPIF1<0恒成立,設(shè)SKIPIF1<0,則SKIPIF1<0,SKIPIF1<0,當(dāng)SKIPIF1<0時,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0是減函數(shù),SKIPIF1<0時,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0是增函數(shù),又SKIPIF1<0是增函數(shù),因此SKIPIF1<0在定義域內(nèi)不是增函數(shù),不合題意.故不存在SKIPIF1<0滿足題意;若選①③,若SKIPIF1<0,則SKIPIF1<0是增函數(shù),若SKIPIF1<0,設(shè)SKIPIF1<0,則SKIPIF1<0,SKIPIF1<0SKIPIF1<0恒成立,設(shè)SKIPIF1<0,則SKIPIF1<0,SKIPIF1<0,當(dāng)SKIPIF1<0時,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0是減函數(shù),SKIPIF1<0時,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0是增函數(shù),又SKIPIF1<0是增函數(shù),因此SKIPIF1<0在定義域內(nèi)不是增函數(shù),不合題意.故不存在SKIPIF1<0滿足題意;要滿足①,則SKIPIF1<0,所以SKIPIF1<0時,SKIPIF1<0,由SKIPIF1<0得SKIPIF1<0,綜上,SKIPIF1<0;所以SKIPIF1<0.若選②③,若SKIPIF1<0,則由SKIPIF1<0,SKIPIF1<0不恒成立,只有SKIPIF1<0時,SKIPIF1<0恒成立,設(shè)SKIPIF1<0,則SKIPIF1<0,又SKIPIF1<0時,SKIPIF1<0SKIPIF1<0SKIPIF1<0,SKIPIF1<0,SKIPIF1<0SKIPIF1<0恒成立,設(shè)SKIPIF1<0,則SKIPIF1<0,SKIPIF1<0,當(dāng)SKIPIF1<0時,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0是減函數(shù),SKIPIF1<0時,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0是增函數(shù),要滿足③,若SKIPIF1<0即SKIPIF1<0時,SKIPIF1<0,所以SKIPIF1<0;若SKIPIF1<0即SKIPIF1<0時,SKIPIF1<0,所以SKIPIF1<0;若SKIPIF1<0,即SKIPIF1<0時,SKIPIF1<0,所以SKIPIF1<0;綜上SKIPIF1<0,所以SKIPIF1<0.20.對于非空數(shù)集A,若其最大元素為M,最小元素為m,則稱集合A的幅值為SKIPIF1<0,若集合A中只有一個元素,則SKIPIF1<0.(1)若SKIPIF1<0,求SKIPIF1<0;(2)若SKIPIF1<0,SKIPIF1<0,求SKIPIF1<0的最大值,并寫出取最大值時的一組SKIPIF1<0;(3)若集合SKIPIF1<0的非空真子集SKIPIF1<0兩兩元素個數(shù)均不相同,且SKIPIF1<0,求n的最大值.【答案】(1)SKIPIF1<0(2)SKIPIF1<0的最大值為SKIPIF1<0,SKIPIF1<0(3)n的最大值為11【解析】【分析】(1)根據(jù)新定義即可求出;(2)由SKIPIF1<0,SKIPIF1<0且要使得SKIPIF1<0取到最大,則只需SKIPIF1<0中元素不同且7,8,9分布在3個集合中,4,5,6,分

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