陜西省咸陽(yáng)市2022-2023學(xué)年高一上學(xué)期期末數(shù)學(xué)試題(含答案詳解)_第1頁(yè)
陜西省咸陽(yáng)市2022-2023學(xué)年高一上學(xué)期期末數(shù)學(xué)試題(含答案詳解)_第2頁(yè)
陜西省咸陽(yáng)市2022-2023學(xué)年高一上學(xué)期期末數(shù)學(xué)試題(含答案詳解)_第3頁(yè)
陜西省咸陽(yáng)市2022-2023學(xué)年高一上學(xué)期期末數(shù)學(xué)試題(含答案詳解)_第4頁(yè)
陜西省咸陽(yáng)市2022-2023學(xué)年高一上學(xué)期期末數(shù)學(xué)試題(含答案詳解)_第5頁(yè)
已閱讀5頁(yè),還剩11頁(yè)未讀 繼續(xù)免費(fèi)閱讀

下載本文檔

版權(quán)說(shuō)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(jiǎn)介

2022~2023學(xué)年度第一學(xué)期期末教學(xué)質(zhì)量檢測(cè)高一數(shù)學(xué)試題注意事項(xiàng):1.本試題滿分150分,時(shí)間120分鐘;2.答卷前,考生務(wù)必將自己的姓名和準(zhǔn)考證號(hào)填寫在答題卡上;3.回答選擇題時(shí),選出每小題答案后,用2B鉛筆把答題卡上對(duì)應(yīng)題目的答案標(biāo)號(hào)涂黑,如需改動(dòng),用橡皮擦干凈后,再選涂其它答案標(biāo)號(hào),回答非選擇題時(shí),將答案寫在答題卡上.寫在本試卷上無(wú)效;4.考試結(jié)束后,監(jiān)考員將答題卡按順序收回,裝袋整理;試題不回收.第I卷(選擇題共60分)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.已知集合SKIPIF1<0,則SKIPIF1<0()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【答案】D【解析】【分析】根據(jù)集合的并運(yùn)算直接求解即可.【詳解】根據(jù)題意可得SKIPIF1<0.故選:D.2.已知函數(shù)SKIPIF1<0的定義域?yàn)镾KIPIF1<0,則函數(shù)SKIPIF1<0的定義域?yàn)椋ǎ〢.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【答案】C【解析】【分析】求抽象函數(shù)的定義域,只需要牢記對(duì)應(yīng)法則括號(hào)中的式子取值范圍相同即可.【詳解】因?yàn)閷?duì)于SKIPIF1<0,括號(hào)中的取值范圍即SKIPIF1<0的取值范圍,即SKIPIF1<0,所以對(duì)于SKIPIF1<0,有SKIPIF1<0,得SKIPIF1<0,故SKIPIF1<0的定義域?yàn)镾KIPIF1<0.故選:C.3.函數(shù)SKIPIF1<0的圖象經(jīng)過(guò)怎樣的平移變換得到函數(shù)SKIPIF1<0的圖像()A.向右平移SKIPIF1<0個(gè)單位長(zhǎng)度 B.向右平移SKIPIF1<0個(gè)單位長(zhǎng)度C.向左平移SKIPIF1<0個(gè)單位長(zhǎng)度 D.向右平移SKIPIF1<0個(gè)單位長(zhǎng)度【答案】B【解析】【分析】化簡(jiǎn)SKIPIF1<0,即得解.【詳解】由題得,SKIPIF1<0所以函數(shù)SKIPIF1<0的圖像向右平移SKIPIF1<0個(gè)單位長(zhǎng)度得到函數(shù)SKIPIF1<0的圖像.故選:B4.“x2-2x>0”是“x>2”的________條件()A.充分不必要條件 B.必要不充分條件C.充要條件 D.既不充分又不必要條件【答案】B【解析】【分析】根據(jù)已知條件求得SKIPIF1<0為SKIPIF1<0或SKIPIF1<0,根據(jù)集合之間的關(guān)系即可判斷出結(jié)果.【詳解】由SKIPIF1<0,得到SKIPIF1<0或SKIPIF1<0,由SKIPIF1<0或SKIPIF1<0推不出SKIPIF1<0,但由SKIPIF1<0一定能推出SKIPIF1<0或SKIPIF1<0,故“x2-2x>0”是“x>2”的必要不充分條件,故選:B.【點(diǎn)睛】本題考查的知識(shí)點(diǎn)是充要條件的判斷,我們可以根據(jù)充要條件的定義來(lái)判斷:方法一:若p?q為假命題且q?p為真命題,則命題p是命題q的必要不充分條件進(jìn)行判定.方法二:分別求出滿足條件p,q的元素的集合P,Q,再判斷P,Q的包含關(guān)系,最后根據(jù)誰(shuí)小誰(shuí)充分,誰(shuí)大誰(shuí)必要的原則,確定答案.5.已知SKIPIF1<0,為實(shí)數(shù),滿足SKIPIF1<0,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<0【答案】C【解析】【分析】根據(jù)題意,利用不等式的基本性質(zhì),以及作差比較和特殊值法,逐項(xiàng)判定,即可求解.【詳解】對(duì)于A中,例如SKIPIF1<0,此時(shí)滿足SKIPIF1<0且SKIPIF1<0,此時(shí)SKIPIF1<0,所以A不正確;對(duì)于B中,當(dāng)SKIPIF1<0時(shí),可得SKIPIF1<0,當(dāng)且僅當(dāng)SKIPIF1<0時(shí),即SKIPIF1<0時(shí),等號(hào)成立,所以B不正確;對(duì)于C中,由SKIPIF1<0且SKIPIF1<0,可得SKIPIF1<0,所以SKIPIF1<0,所以C正確;對(duì)于D中,由SKIPIF1<0,因?yàn)镾KIPIF1<0,可得SKIPIF1<0,但SKIPIF1<0的符號(hào)不確定,所以D不正確.故選:C.6.已知扇形的周長(zhǎng)為7,面積為3,則該扇形的圓心角的弧度數(shù)為()A.SKIPIF1<0 B.SKIPIF1<0或SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0或SKIPIF1<0【答案】B【解析】【分析】由已知,設(shè)出扇形的半徑SKIPIF1<0和弧長(zhǎng)SKIPIF1<0,然后根據(jù)扇形周長(zhǎng)和面積列出方程組,解出半徑SKIPIF1<0和弧長(zhǎng)SKIPIF1<0,然后直接計(jì)算圓心角的弧度數(shù)即可.【詳解】設(shè)扇形的半徑為SKIPIF1<0,弧長(zhǎng)為SKIPIF1<0,由題意得SKIPIF1<0,解得SKIPIF1<0或SKIPIF1<0,故扇形的圓心角的弧度數(shù)SKIPIF1<0或SKIPIF1<0.故選:B.7.圍棋棋盤共19行19列,361個(gè)格點(diǎn),每個(gè)格點(diǎn)上可能出現(xiàn)黑?白?空三種情況,因此有SKIPIF1<0種不同的情況,我國(guó)北宋學(xué)者沈括在他的著作《夢(mèng)溪筆談》中也討論過(guò)這個(gè)問(wèn)題,他分析得出一局圍棋不同的變化大約有“連書萬(wàn)字五十二”種,即SKIPIF1<0,(SKIPIF1<0),下列最接近SKIPIF1<0的是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【答案】C【解析】【分析】根據(jù)題意,取對(duì)數(shù)得SKIPIF1<0,得到SKIPIF1<0,分析選項(xiàng),即可求解【詳解】根據(jù)題意SKIPIF1<0,對(duì)于SKIPIF1<0,可得SKIPIF1<0,可得SKIPIF1<0,分析選項(xiàng),可得C中SKIPIF1<0與其最接近.故選:C.【點(diǎn)睛】方法點(diǎn)睛:本題主要考查了對(duì)數(shù)的運(yùn)算性質(zhì)及其應(yīng)用,其中解答中掌握對(duì)數(shù)的運(yùn)算性質(zhì)是解答的關(guān)鍵,著重考查計(jì)算與求解能力.8.已知函數(shù)SKIPIF1<0與SKIPIF1<0的圖象上不存在關(guān)于SKIPIF1<0軸對(duì)稱的點(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】D【解析】【分析】將問(wèn)題轉(zhuǎn)化為方程SKIPIF1<0在SKIPIF1<0上無(wú)解,參變分離得SKIPIF1<0在SKIPIF1<0上無(wú)解,從而求函數(shù)SKIPIF1<0在SKIPIF1<0上的值域,即可得實(shí)數(shù)SKIPIF1<0的取值范圍.【詳解】函數(shù)SKIPIF1<0與SKIPIF1<0的圖象上不存在關(guān)于SKIPIF1<0軸對(duì)稱的點(diǎn),直線SKIPIF1<0關(guān)于SKIPIF1<0軸對(duì)稱的直線方程為SKIPIF1<0,則方程SKIPIF1<0在SKIPIF1<0上無(wú)解,即SKIPIF1<0在SKIPIF1<0上無(wú)解,又函數(shù)SKIPIF1<0在SKIPIF1<0上單調(diào)遞增,在SKIPIF1<0上單調(diào)遞減,又SKIPIF1<0時(shí),SKIPIF1<0,SKIPIF1<0時(shí),SKIPIF1<0,SKIPIF1<0時(shí),SKIPIF1<0,所以SKIPIF1<0的值域?yàn)镾KIPIF1<0故實(shí)數(shù)SKIPIF1<0的取值范圍是SKIPIF1<0.故選:D.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.下列函數(shù)中,在區(qū)間SKIPIF1<0上為增函數(shù)的是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【答案】AC【解析】【分析】根據(jù)基本初等函數(shù)的單調(diào)性判斷出各選項(xiàng)中的函數(shù)在區(qū)間SKIPIF1<0上的單調(diào)性,可得出正確選項(xiàng).【詳解】對(duì)于A選項(xiàng),函數(shù)SKIPIF1<0在區(qū)間SKIPIF1<0上為增函數(shù),正確;對(duì)于B選項(xiàng),當(dāng)SKIPIF1<0時(shí),SKIPIF1<0,該函數(shù)在區(qū)間SKIPIF1<0上為減函數(shù),錯(cuò)誤.對(duì)于C選項(xiàng),函數(shù)SKIPIF1<0在區(qū)間SKIPIF1<0上為減函數(shù),SKIPIF1<0在區(qū)間SKIPIF1<0上為增函數(shù),正確;對(duì)于D選項(xiàng),函數(shù)SKIPIF1<0在區(qū)間SKIPIF1<0上為減函數(shù),錯(cuò)誤;故選:AC.10.(多選)在同一直角坐標(biāo)系中,函數(shù)SKIPIF1<0(a>0且a≠1)的圖象可能是()A. B.C. D.【答案】AC【解析】【分析】對(duì)a進(jìn)行討論,結(jié)合指數(shù)函數(shù),對(duì)數(shù)函數(shù)的性質(zhì)即可判斷;【詳解】由函數(shù)SKIPIF1<0,當(dāng)a>1時(shí),可得SKIPIF1<0是遞減函數(shù),圖象恒過(guò)(0,1)點(diǎn),函數(shù)SKIPIF1<0,是遞增函數(shù),圖象恒過(guò)SKIPIF1<0,當(dāng)1>a>0時(shí),可得SKIPIF1<0是遞增函數(shù),圖象恒過(guò)(0,1)點(diǎn),函數(shù)SKIPIF1<0,是遞減函數(shù),圖象恒過(guò)SKIPIF1<0;∴滿足要求的圖象為:A,C故選:AC點(diǎn)睛】本小題主要考查指數(shù)函數(shù)、對(duì)數(shù)函數(shù)圖象與性質(zhì).11.如圖是函數(shù)SKIPIF1<0的部分圖象,則下列結(jié)論正確的有()A.SKIPIF1<0的最小正周期為SKIPIF1<0 B.SKIPIF1<0的圖象關(guān)于直線SKIPIF1<0對(duì)稱C.SKIPIF1<0 D.函數(shù)SKIPIF1<0在SKIPIF1<0上有2個(gè)零點(diǎn)【答案】ACD【解析】【分析】由函數(shù)SKIPIF1<0的圖象,得到SKIPIF1<0,得到SKIPIF1<0,可判定A正確,B不正確;再由三角函數(shù)的性質(zhì),可判定C正確;由當(dāng)SKIPIF1<0時(shí),得到SKIPIF1<0,得到SKIPIF1<0,可判定D正確.【詳解】由函數(shù)SKIPIF1<0的圖象,可得SKIPIF1<0,解得SKIPIF1<0,所以SKIPIF1<0,又由SKIPIF1<0,可得SKIPIF1<0,所以SKIPIF1<0,解得SKIPIF1<0,因?yàn)镾KIPIF1<0,所以SKIPIF1<0,即SKIPIF1<0,所以A正確,B不正確;又由SKIPIF1<0,所以C正確;當(dāng)SKIPIF1<0時(shí),可得SKIPIF1<0,當(dāng)SKIPIF1<0時(shí),即SKIPIF1<0時(shí),可得SKIPIF1<0;當(dāng)SKIPIF1<0時(shí),即SKIPIF1<0時(shí),可得SKIPIF1<0,所以函數(shù)SKIPIF1<0在SKIPIF1<0上有2個(gè)零點(diǎn),所以D正確.故選:ACD.12.已知定義在R上的函數(shù)SKIPIF1<0,滿足SKIPIF1<0是奇函數(shù),且SKIPIF1<0是偶函數(shù).則下列命題正確的是()A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<0【答案】BD【解析】【分析】由SKIPIF1<0是奇函數(shù),可得SKIPIF1<0,由SKIPIF1<0,可得SKIPIF1<0兩方程聯(lián)立求出SKIPIF1<0的解析式,然后逐個(gè)分析判斷.【詳解】因?yàn)镾KIPIF1<0是奇函數(shù),所以SKIPIF1<0,SKIPIF1<0,所以SKIPIF1<0,因?yàn)镾KIPIF1<0是偶函數(shù),所以SKIPIF1<0,所以SKIPIF1<0,所以SKIPIF1<0,對(duì)于A,SKIPIF1<0,所以A錯(cuò)誤,對(duì)于B,SKIPIF1<0,所以B正確,對(duì)于C,SKIPIF1<0,當(dāng)SKIPIF1<0為偶數(shù)時(shí),SKIPIF1<0,當(dāng)SKIPIF1<0為奇數(shù)時(shí),SKIPIF1<0,所以C錯(cuò)誤,對(duì)于D,因?yàn)镾KIPIF1<0,SKIPIF1<0,所以SKIPIF1<0,所以D正確,故選:BD第II卷(非選擇題共90分)三、填空題(本題共4小題,每小題5分,共20分)13.已知角SKIPIF1<0的終邊經(jīng)過(guò)點(diǎn)SKIPIF1<0,則SKIPIF1<0______【答案】SKIPIF1<0##-0.2【解析】【分析】根據(jù)任意角的三角函數(shù)定義進(jìn)行計(jì)算求解.【詳解】已知角SKIPIF1<0的終邊經(jīng)過(guò)點(diǎn)SKIPIF1<0,根據(jù)任意角的三角函數(shù)定義有:SKIPIF1<0,SKIPIF1<0,所以SKIPIF1<0.故答案為:SKIPIF1<0.14.已知冪函數(shù)SKIPIF1<0滿足SKIPIF1<0,則SKIPIF1<0______.【答案】SKIPIF1<0【解析】【分析】根據(jù)冪函數(shù)的定義和單調(diào)性進(jìn)行求解即可.【詳解】因?yàn)楹瘮?shù)SKIPIF1<0為冪函數(shù),則SKIPIF1<0,解得SKIPIF1<0或SKIPIF1<0,又因?yàn)镾KIPIF1<0,所以SKIPIF1<0,故答案為:SKIPIF1<0.15.函數(shù)SKIPIF1<0圖象的一個(gè)對(duì)稱中心為______.【答案】SKIPIF1<0(答案不唯一)【解析】【分析】先把SKIPIF1<0整理化簡(jiǎn)為SKIPIF1<0,再令SKIPIF1<0,SKIPIF1<0,可得對(duì)稱中心為SKIPIF1<0,SKIPIF1<0.【詳解】SKIPIF1<0,令SKIPIF1<0,SKIPIF1<0,得SKIPIF1<0,SKIPIF1<0,故對(duì)稱中心SKIPIF1<0,SKIPIF1<0,故答案為:SKIPIF1<0(答案不唯一)16.定義:SKIPIF1<0表示不超過(guò)SKIPIF1<0的最大整數(shù),SKIPIF1<0,SKIPIF1<0.已知函數(shù)SKIPIF1<0,SKIPIF1<0,則函數(shù)SKIPIF1<0的值域?yàn)開_____.【答案】SKIPIF1<0##SKIPIF1<0【解析】【分析】先分析函數(shù)SKIPIF1<0在SKIPIF1<0值域,然后由取整函數(shù)定義求解即可.【詳解】因?yàn)镾KIPIF1<0,當(dāng)SKIPIF1<0時(shí),函數(shù)SKIPIF1<0為減函數(shù),所以SKIPIF1<0,所以SKIPIF1<0;當(dāng)SKIPIF1<0時(shí),函數(shù)SKIPIF1<0為減函數(shù),所以SKIPIF1<0,所以SKIPIF1<0;綜上所述:SKIPIF1<0的值域?yàn)镾KIPIF1<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(shuō)明、證明過(guò)程或演算步驟)17.已知集合SKIPIF1<0為全體實(shí)數(shù)集,SKIPIF1<0或SKIPIF1<0,SKIPIF1<0.(1)若SKIPIF1<0,求SKIPIF1<0;(2)若SKIPIF1<0,求實(shí)數(shù)SKIPIF1<0的取值范圍.【答案】(1)SKIPIF1<0;(2)SKIPIF1<0.【解析】【分析】(1)先求出SKIPIF1<0與SKIPIF1<0,從而求出交集;(2)先確定SKIPIF1<0,再根據(jù)集合之間的包含關(guān)系得到不等式組,求出實(shí)數(shù)SKIPIF1<0的取值范圍.【小問(wèn)1詳解】當(dāng)SKIPIF1<0時(shí),SKIPIF1<0,而SKIPIF1<0,所以SKIPIF1<0.【小問(wèn)2詳解】因SKIPIF1<0,顯然SKIPIF1<0,SKIPIF1<0,則有SKIPIF1<0或SKIPIF1<0,即SKIPIF1<0或SKIPIF1<0,所以實(shí)數(shù)SKIPIF1<0的取值范圍為SKIPIF1<0.18.已知SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0.(1)SKIPIF1<0;(2)SKIPIF1<0.【答案】(1)SKIPIF1<0(2)SKIPIF1<0【解析】【分析】(1)求得SKIPIF1<0,根據(jù)三角函數(shù)的基本關(guān)系式,即可求解;(2)根據(jù)三角函數(shù)的基本關(guān)系式,求得SKIPIF1<0,再由SKIPIF1<0,即可求解.【小問(wèn)1詳解】解:因?yàn)镾KIPIF1<0,SKIPIF1<0,所以SKIPIF1<0,又因?yàn)镾KIPIF1<0,所以SKIPIF1<0.【小問(wèn)2詳解】解:因?yàn)镾KIPIF1<0,SKIPIF1<0,可得SKIPIF1<0,又因?yàn)镾KIPIF1<0,所以SKIPIF1<0SKIPIF1<0.19.已知函數(shù)SKIPIF1<0.(1)求SKIPIF1<0的最小正周期和單調(diào)增區(qū)間;(2)求證:當(dāng)SKIPIF1<0時(shí),恒有SKIPIF1<0.【答案】(1)SKIPIF1<0的最小正周期為SKIPIF1<0,單調(diào)增區(qū)間為SKIPIF1<0(2)證明見(jiàn)解析【解析】【分析】(1)利用兩角和與差的正弦公式將函數(shù)化簡(jiǎn),代入周期的計(jì)算公式即可求出周期,根據(jù)正弦函數(shù)的單調(diào)性即可求解函數(shù)的單調(diào)增區(qū)間;(2)根據(jù)自變量SKIPIF1<0求出SKIPIF1<0,然后利用正弦函數(shù)的圖像即可求證.【小問(wèn)1詳解】函數(shù)SKIPIF1<0SKIPIF1<0,∴函數(shù)SKIPIF1<0的最小正周期SKIPIF1<0,令SKIPIF1<0,得SKIPIF1<0,∴函數(shù)SKIPIF1<0的單調(diào)增區(qū)間為SKIPIF1<0.【小問(wèn)2詳解】當(dāng)SKIPIF1<0時(shí),SKIPIF1<0∴SKIPIF1<0即當(dāng)SKIPIF1<0時(shí),SKIPIF1<0恒成立,得證.20.已知正實(shí)數(shù)x、y滿足SKIPIF1<0.(1)是否存在正實(shí)數(shù)x、y使得SKIPIF1<0?若存在,求出x、y的值;若不存在,請(qǐng)說(shuō)明理由.(2)求SKIPIF1<0的最小值.【答案】(1)不存在,理由見(jiàn)解析;(2)SKIPIF1<0.【解析】【分析】(1)結(jié)合SKIPIF1<0可求SKIPIF1<0的范圍,進(jìn)而判斷不正確;(2)結(jié)合“1”的妙用和拼湊法即可求解.【小問(wèn)1詳解】不存在,因?yàn)镾KIPIF1<0,故SKIPIF1<0,又因?yàn)镾KIPIF1<0,故SKIPIF1<0,解得SKIPIF1<0,故不存在x,y,使得SKIPIF1<0;【小問(wèn)2詳解】SKIPIF1<0SKIPIF1<0,當(dāng)且僅當(dāng)SKIPIF1<0時(shí)取到等號(hào),此時(shí)SKIPIF1<0,所以SKIPIF1<0的最小值為SKIPIF1<0.21.已知函數(shù)SKIPIF1<0(SKIPIF1<0且SKIPIF1<0)在SKIPIF1<0上的最大值為3.(1)求SKIPIF1<0的值;(2)假設(shè)函數(shù)SKIPIF1<0的定義域是SKIPIF1<0,求關(guān)于SKIPIF1<0的不等式SKIPIF1<0的解集.【答案】(1)SKIPIF1<0或SKIPIF1<0(2)SKIPIF1<0【解析】【分析】(1)根據(jù)已知,利用對(duì)數(shù)函數(shù)的性質(zhì)分類討論,再進(jìn)行計(jì)算求解(2)根據(jù)已知,利用對(duì)數(shù)函數(shù)性質(zhì)以及一元二次函數(shù)、一元二次方程進(jìn)行求解.【小問(wèn)1詳解】當(dāng)SKIPIF1<0時(shí),函數(shù)SKIPIF1<0(SKIPIF1<0且SKIPIF1<0)在SKIPIF1<0上單調(diào)遞減,∴SKIPIF1<0,解得SKIPIF1<0;當(dāng)SKIPIF1<0時(shí),函數(shù)SKIPIF1<0(SKIPIF1<0且SKIPIF1<0)在SKIPIF1<0上單調(diào)遞增,∴SKIPIF1<0,解得SKIPIF1<0,綜上所述,SKIPIF1<0或SKIPIF1<0【小問(wèn)2詳解】∵SKIPIF1<0的定義域是SKIPIF1<0,∴SKIPIF1<0恒成立,則方程SKIPIF1<0的判別式SKIPIF1<0,即SKIPIF1<0,解得SKIPIF1<0又SKIPIF1<0或SKIPIF1<0,因此SKIPIF1<0,∴不等式SKIPIF1<0,即SKIPIF1<0,即SKIPIF1<0,解得SKIPIF1<0因此不等式SKIPIF1<0的解集為SKIPIF1<0.22.某科研單位在研發(fā)鈦合金產(chǎn)品的過(guò)程中使用了一種新材料.該產(chǎn)品的性能指標(biāo)值是這種新材料的含量x(單位:克)的函數(shù),且性能指標(biāo)值越大,該

溫馨提示

  • 1. 本站所有資源如無(wú)特殊說(shuō)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(yè)內(nèi)容里面會(huì)有圖紙預(yù)覽,若沒(méi)有圖紙預(yù)覽就沒(méi)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(kù)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。

評(píng)論

0/150

提交評(píng)論