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2017年高考山東理科數(shù)學(xué)試題及答案(word版)2017年高考山東理科數(shù)學(xué)試題及答案(word版)2017年高考山東理科數(shù)學(xué)試題及答案(word版)#2017年普通高等學(xué)校招生全國(guó)統(tǒng)一考試(山東卷)數(shù)學(xué)(理科)第Ⅰ卷(共50分)一、選擇題:本大題共10小題,每小題5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)【2017年山東,理1,5分】設(shè)函數(shù)EMBEDEquation.3的定義域?yàn)镋MBEDEquation.DSMT4,函數(shù)EMBEDEquation.3的定義域?yàn)镋MBEDEquation.DSMT4,則EMBEDEquation.DSMT4()(A)EMBEDEquation.DSMT4(B)EMBEDEquation.DSMT4(C)EMBEDEquation.DSMT4(D)EMBEDEquation.DSMT4【答案】D【解析】由EMBEDEquation.DSMT4得EMBEDEquation.DSMT4,由EMBEDEquation.DSMT4得EMBEDEquation.DSMT4,EMBEDEquation.DSMT4,故選D.(2)【2017年山東,理2,5分】已知EMBEDEquation.3,EMBEDEquation.DSMT4是虛數(shù)單位,若EMBEDEquation.DSMT4,EMBEDEquation.DSMT4,則EMBEDEquation.DSMT4()(A)1或EMBEDEquation.DSMT4(B)EMBEDEquation.DSMT4或EMBEDEquation.DSMT4(C)EMBEDEquation.DSMT4(D)EMBEDEquation.DSMT4【答案】A【解析】由EMBEDEquation.DSMT4得EMBEDEquation.DSMT4,所以EMBEDEquation.DSMT4,故選A.(3)【2017年山東,理3,5分】已知命題EMBEDEquation.DSMT4:EMBEDEquation.DSMT4,EMBEDEquation.DSMT4;命題EMBEDEquation.DSMT4:若EMBEDEquation.DSMT4,則EMBEDEquation.DSMT4,下列命題為真命題的是()(A)EMBEDEquation.DSMT4(B)EMBEDEquation.DSMT4(C)EMBEDEquation.DSMT4(D)EMBEDEquation.DSMT4【答案】B【解析】由EMBEDEquation.DSMT4時(shí)EMBEDEquation.DSMT4有意義,知EMBEDEquation.DSMT4是真命題,由EMBEDEquation.DSMT4可知EMBEDEquation.DSMT4是假命題,即EMBEDEquation.DSMT4,EMBEDEquation.DSMT4均是真命題,故選B.(4)【2017年山東,理4,5分】已知EMBEDEquation.DSMT4、EMBEDEquation.DSMT4滿(mǎn)足約束條件EMBEDEquation.DSMT4,則EMBEDEquation.DSMT4的最大值是() (A)0(B)2 (C)5(D)6【答案】C【解析】由EMBEDEquation.DSMT4畫(huà)出可行域及直線(xiàn)EMBEDEquation.DSMT4如圖所示,平移EMBEDEquation.DSMT4發(fā)現(xiàn),當(dāng)其經(jīng)過(guò)直線(xiàn)EMBEDEquation.DSMT4與EMBEDEquation.DSMT4的交點(diǎn)EMBEDEquation.DSMT4時(shí),EMBEDEquation.DSMT4最大為EMBEDEquation.DSMT4,故選C.(5)【2017年山東,理5,5分】為了研究某班學(xué)生的腳長(zhǎng)EMBEDEquation.DSMT4(單位:厘米)和身高EMBEDEquation.DSMT4(單位:厘米)的關(guān)系,從該班隨機(jī)抽取10名學(xué)生,根據(jù)測(cè)量數(shù)據(jù)的散點(diǎn)圖可以看出EMBEDEquation.DSMT4與EMBEDEquation.DSMT4之間有線(xiàn)性相關(guān)關(guān)系,設(shè)其回歸直線(xiàn)方程為EMBEDEquation.DSMT4,已知EMBEDEquation.DSMT4,EMBEDEquation.DSMT4,EMBEDEquation.DSMT4,該班某學(xué)生的腳長(zhǎng)為24,據(jù)此估計(jì)其身高為() (A)160 (B)163(C)166(D)170【答案】C【解析】EMBEDEquation.DSMT4,故選C.(6)【2017年山東,理6,5分】執(zhí)行兩次如圖所示的程序框圖,若第一次輸入的EMBEDEquation.DSMT4值為7,第二次輸入的EMBEDEquation.DSMT4值為9,則第一次、第二次輸出的EMBEDEquation.DSMT4值分別為()(A)0,0(B)1,1(C)0,1(D)1,0【答案】D【解析】第一次EMBEDEquation.DSMT4;第二次EMBEDEquation.DSMT4,故選D.(7)【2017年山東,理7,5分】若EMBEDEquation.DSMT4,且EMBEDEquation.DSMT4,則下列不等式成立的是()(A)EMBEDEquation.DSMT4(B)EMBEDEquation.DSMT4(C)EMBEDEquation.DSMT4(D)EMBEDEquation.DSMT4【答案】B【解析】EMBEDEquation.DSMT4EMBEDEquation.DSMT4,故選B.(8)【2017年山東,理8,5分】從分別標(biāo)有1,2,…,9的9張卡片中不放回地隨機(jī)抽取2次,每次抽取1張,則抽到在2張卡片上的數(shù)奇偶性不同的概率是()(A)EMBEDEquation.DSMT4(B)EMBEDEquation.DSMT4(C)EMBEDEquation.DSMT4(D)EMBEDEquation.DSMT4【答案】C【解析】EMBEDEquation.DSMT4,故選C.(9)【2017年山東,理9,5分】在EMBEDEquation.DSMT4中,角EMBEDEquation.DSMT4、EMBEDEquation.DSMT4、EMBEDEquation.DSMT4的對(duì)邊分別為EMBEDEquation.DSMT4、EMBEDEquation.DSMT4、EMBEDEquation.DSMT4,若EMBEDEquation.DSMT4為銳角三角形,且滿(mǎn)足EMBEDEquation.DSMT4,則下列等式成立的是()(A)EMBEDEquation.DSMT4(B)EMBEDEquation.DSMT4(C)EMBEDEquation.DSMT4(D)EMBEDEquation.DSMT4【答案】A【解析】EMBEDEquation.DSMT4所以EMBEDEquation.DSMT4,故選A.(10)【2017年山東,理10,5分】已知當(dāng)EMBEDEquation.DSMT4時(shí),函數(shù)EMBEDEquation.DSMT4的圖象與EMBEDEquation.DSMT4的圖象有且只有一個(gè)交點(diǎn),則正實(shí)數(shù)EMBEDEquation.DSMT4的取值范圍是()(A)EMBEDEquation.DSMT4(B)EMBEDEquation.DSMT4(C)EMBEDEquation.DSMT4(D)EMBEDEquation.DSMT4【答案】B【解析】當(dāng)EMBEDEquation.DSMT4時(shí),EMBEDEquation.DSMT4,EMBEDEquation.DSMT4單調(diào)遞減,且EMBEDEquation.DSMT4,EMBEDEquation.DSMT4單調(diào)遞增,且EMBEDEquation.DSMT4,此時(shí)有且僅有一個(gè)交點(diǎn);當(dāng)EMBEDEquation.DSMT4時(shí),EMBEDEquation.DSMT4,EMBEDEquation.DSMT4在EMBEDEquation.DSMT4上單調(diào)遞增,所以要有且僅有一個(gè)交點(diǎn),需EMBEDEquation.DSMT4,故選B.第II卷(共100分)二、填空題:本大題共5小題,每小題5分(11)【2017年山東,理11,5分】已知EMBEDEquation.DSMT4的展開(kāi)式中含有EMBEDEquation.DSMT4的系數(shù)是54,則EMBEDEquation.DSMT4.【答案】4【解析】EMBEDEquation.DSMT4,令EMBEDEquation.DSMT4得:EMBEDEquation.DSMT4,解得EMBEDEquation.DSMT4.(12)【2017年山東,理12,5分】已知EMBEDEquation.DSMT4、EMBEDEquation.DSMT4是互相垂直的單位向量,若EMBEDEquation.DSMT4與EMBEDEquation.DSMT4的夾角為EMBEDEquation.DSMT4,則實(shí)數(shù)EMBEDEquation.DSMT4的值是.【答案】EMBEDEquation.DSMT4【解析】EMBEDEquation.DSMT4,EMBEDEquation.DSMT4EMBEDEquation.DSMT4,EMBEDEquation.DSMT4,EMBEDEquation.DSMT4EMBEDEquation.DSMT4,解得:EMBEDEquation.DSMT4.(13)【2017年山東,理13,5分】由一個(gè)長(zhǎng)方體和兩個(gè)EMBEDEquation.DSMT4圓柱體構(gòu)成的幾何體的三視圖如圖,則該幾何體的體積為.【答案】EMBEDEquation.DSMT4【解析】該幾何體的體積為EMBEDEquation.DSMT4.(14)【2017年山東,理14,5分】在平面直角坐標(biāo)系EMBEDEquation.DSMT4中,雙曲線(xiàn)EMBEDEquation.DSMT4(EMBEDEquation.DSMT4,EMBEDEquation.DSMT4)的右支與焦點(diǎn)為EMBEDEquation.DSMT4的拋物線(xiàn)EMBEDEquation.DSMT4(EMBEDEquation.DSMT4)交于EMBEDEquation.DSMT4、EMBEDEquation.DSMT4兩點(diǎn),若EMBEDEquation.DSMT4,則該雙曲線(xiàn)的漸近線(xiàn)方程為.【答案】EMBEDEquation.DSMT4【解析】EMBEDEquation.DSMT4,因?yàn)镋MBEDEquation.DSMT4,所以EMBEDEquation.DSMT4漸近線(xiàn)方程為EMBEDEquation.DSMT4.(15)【2017年山東,理15,5分】若函數(shù)EMBEDEquation.DSMT4(EMBEDEquation.DSMT4是自然對(duì)數(shù)的底數(shù))在EMBEDEquation.DSMT4的定義域上單調(diào)遞增,則稱(chēng)函數(shù)EMBEDEquation.DSMT4具有M性質(zhì)。下列函數(shù)中所有具有M性質(zhì)的函數(shù)的序號(hào)為.①EMBEDEquation.DSMT4②EMBEDEquation.DSMT4③EMBEDEquation.DSMT4④EMBEDEquation.DSMT4【答案】=1\*GB3①=4\*GB3④【解析】=1\*GB3①EMBEDEquation.DSMT4在EMBEDEquation.DSMT4上單調(diào)遞增,故EMBEDEquation.DSMT4具有EMBEDEquation.DSMT4性質(zhì);=2\*GB3②EMBEDEquation.DSMT4在EMBEDEquation.DSMT4上單調(diào)遞減,故EMBEDEquation.DSMT4不具有EMBEDEquation.DSMT4性質(zhì);=3\*GB3③EMBEDEquation.DSMT4,令EMBEDEquation.DSMT4,則EMBEDEquation.DSMT4,EMBEDEquation.DSMT4當(dāng)EMBEDEquation.DSMT4時(shí),EMBEDEquation.DSMT4,當(dāng)EMBEDEquation.DSMT4時(shí),EMBEDEquation.DSMT4,EMBEDEquation.DSMT4EMBEDEquation.DSMT4在EMBEDEquation.DSMT4上單調(diào)遞減,在EMBEDEquation.DSMT4上單調(diào)遞增,故EMBEDEquation.DSMT4不具有EMBEDEquation.DSMT4性質(zhì);=4\*GB3④EMBEDEquation.DSMT4,令EMBEDEquation.DSMT4,則EMBEDEquation.DSMT4,EMBEDEquation.DSMT4EMBEDEquation.DSMT4在EMBEDEquation.DSMT4上單調(diào)遞增,故EMBEDEquation.DSMT4具有EMBEDEquation.DSMT4性質(zhì).三、解答題:本大題共6題,共75分.(16)【2017年山東,理16,12分】設(shè)函數(shù)EMBEDEquation.DSMT4,其中EMBEDEquation.DSMT4,已知EMBEDEquation.DSMT4.QUOTE(1)求EMBEDEquation.DSMT4;(2)將函數(shù)EMBEDEquation.DSMT4的圖象上各點(diǎn)的橫坐標(biāo)伸長(zhǎng)為原來(lái)的2倍(縱坐標(biāo)不變),再將得到的圖象向左平移EMBEDEquation.DSMT4個(gè)單位,得到函數(shù)EMBEDEquation.DSMT4的圖象,求EMBEDEquation.DSMT4在EMBEDEquation.DSMT4上的最小值.解:(1)因?yàn)镋MBEDEquation.DSMT4,所以EMBEDEquation.DSMT4EMBEDEquation.DSMT4EMBEDEquation.DSMT4EMBEDEquation.DSMT4,由題設(shè)知EMBEDEquation.DSMT4,所以EMBEDEquation.DSMT4,EMBEDEquation.DSMT4.故EMBEDEquation.DSMT4,EMBEDEquation.DSMT4,又EMBEDEquation.DSMT4,所以EMBEDEquation.DSMT4.(2)由(1)得EMBEDEquation.DSMT4,所以EMBEDEquation.DSMT4.因?yàn)镋MBEDEquation.DSMT4,所以EMBEDEquation.DSMT4,當(dāng)EMBEDEquation.DSMT4,即EMBEDEquation.DSMT4時(shí),EMBEDEquation.DSMT4取得最小值EMBEDEquation.DSMT4.(17)【2017年山東,理17,12分】如圖,幾何體是圓柱的一部分,它是由矩形EMBEDEquation.DSMT4(及其內(nèi)部)以EMBEDEquation.DSMT4邊所在直線(xiàn)為旋轉(zhuǎn)軸旋轉(zhuǎn)EMBEDEquation.DSMT4得到的,EMBEDEquation.DSMT4是EMBEDEquation.DSMT4的中點(diǎn).(1)設(shè)EMBEDEquation.DSMT4是EMBEDEquation.DSMT4上的一點(diǎn),且EMBEDEquation.DSMT4,求EMBEDEquation.DSMT4的大??;(2)當(dāng)EMBEDEquation.DSMT4,EMBEDEquation.DSMT4時(shí),求二面角EMBEDEquation.DSMT4的大小.解:(1)因?yàn)镋MBEDEquation.DSMT4,EMBEDEquation.DSMT4,EMBEDEquation.DSMT4,EMBEDEquation.DSMT4EMBEDEquation.DSMT4平面EMBEDEquation.DSMT4,EMBEDEquation.DSMT4,所以EMBEDEquation.DSMT4平面EMBEDEquation.DSMT4,又EMBEDEquation.DSMT4平面EMBEDEquation.DSMT4,所以EMBEDEquation.DSMT4,又EMBEDEquation.DSMT4,因此EMBEDEquation.DSMT4.(2)解法一:取EMBEDEquation.DSMT4的中點(diǎn)EMBEDEquation.DSMT4,連接EMBEDEquation.DSMT4,EMBEDEquation.DSMT4,EMBEDEquation.DSMT4.因?yàn)镋MBEDEquation.DSMT4,所以四邊形EMBEDEquation.DSMT4為菱形,所以EMBEDEquation.DSMT4.取EMBEDEquation.DSMT4中點(diǎn)EMBEDEquation.DSMT4,連接EMBEDEquation.DSMT4,EMBEDEquation.DSMT4,EMBEDEquation.DSMT4.EMBEDEquation.DSMT4,EMBEDEquation.DSMT4,EMBEDEquation.DSMT4為所求二面角的平面角.EMBEDEquation.DSMT4,EMBEDEquation.DSMT4.在EMBEDEquation.DSMT4中,EMBEDEquation.DSMT4,由余弦定理EMBEDEquation.DSMT4,所以EMBEDEquation.DSMT4,因此EMBEDEquation.DSMT4為等邊三角形,故所求的角為EMBEDEquation.DSMT4.解法二:以EMBEDEquation.DSMT4為坐標(biāo)原點(diǎn),分別以EMBEDEquation.DSMT4,EMBEDEquation.DSMT4,EMBEDEquation.DSMT4所在的直線(xiàn)為EMBEDEquation.DSMT4,EMBEDEquation.DSMT4,EMBEDEquation.DSMT4軸,建立如圖所示的空間直角坐標(biāo)系.由題意得EMBEDEquation.DSMT4EMBEDEquation.DSMT4,EMBEDEquation.DSMT4,EMBEDEquation.DSMT4,故EMBEDEquation.DSMT4,EMBEDEquation.DSMT4,EMBEDEquation.DSMT4,設(shè)EMBEDEquation.DSMT4是平面EMBEDEquation.DSMT4的一個(gè)法向量.由EMBEDEquation.DSMT4可得EMBEDEquation.DSMT4取EMBEDEquation.DSMT4,得平面EMBEDEquation.DSMT4的一個(gè)法向量EMBEDEquation.DSMT4.設(shè)EMBEDEquation.DSMT4是平面EMBEDEquation.DSMT4的一個(gè)法向量.由EMBEDEquation.DSMT4可得EMBEDEquation.DSMT4取EMBEDEquation.DSMT4,可得平面EMBEDEquation.DSMT4的一個(gè)法向量EMBEDEquation.DSMT4.所以EMBEDEquation.DSMT4.因此所求的角為EMBEDEquation.DSMT4.(18)【2017年山東,理18,12分】在心理學(xué)研究中,常采用對(duì)比試驗(yàn)的方法評(píng)價(jià)不同心理暗示對(duì)人的影響,具體方法如下:將參加試驗(yàn)的志愿者隨機(jī)分成兩組,一組接受甲種心理暗示,另一組接受乙種心理暗示,通過(guò)對(duì)比這兩組志愿者接受心理暗示后的結(jié)果來(lái)評(píng)價(jià)兩種心理暗示的作用,現(xiàn)有6名男志愿者A1,A2,A3,A4,A5,A6和4名女志愿者B1,B2,B3,B4,從中隨機(jī)抽取5人接受甲種心理暗示,另5人接受乙種心理暗示.(1)求接受甲種心理暗示的志愿者中包含A1但不包含B1的概率;(2)用EMBEDEquation.DSMT4表示接受乙種心理暗示的女志愿者人數(shù),求EMBEDEquation.DSMT4的分布列與數(shù)學(xué)期望EMBEDEquation.DSMT4.解:(1)記接受甲種心理暗示的志愿者中包含EMBEDEquation.DSMT4但不包含EMBEDEquation.DSMT4的事件為M,則EMBEDEquation.DSMT4.(2)由題意知X可取的值為:0,1,2,3,4.則EMBEDEquation.DSMT4EMBEDEquation.DSMT4EMBEDEquation.DSMT4EMBEDEquation.DSMT4EMBEDEquation.DSMT4因此X的分布列為X01234PEMBEDEquation.DSMT4EMBEDEquation.DSMT4EMBEDEquation.DSMT4EMBEDEquation.DSMT4EMBEDEquation.DSMT4X的數(shù)學(xué)期望是EMBEDEquation.DSMT4=EMBEDEquation.DSMT4.(19)【2017年山東,理19,12分】已知EMBEDEquation.DSMT4是各項(xiàng)均為正數(shù)的等比數(shù)列,且EMBEDEquation.DSMT4,EMBEDEquation.DSMT4.(1)求數(shù)列EMBEDEquation.DSMT4的通項(xiàng)公式;(2)如圖,在平面直角坐標(biāo)系EMBEDEquation.DSMT4中,依次連接點(diǎn)EMBEDEquation.DSMT4,EMBEDEquation.DSMT4,…,EMBEDEquation.DSMT4得到折線(xiàn)EMBEDEquation.DSMT4,求由該折線(xiàn)與直線(xiàn)EMBEDEquation.DSMT4,EMBEDEquation.DSMT4,EMBEDEquation.DSMT4所圍成的區(qū)域的面積EMBEDEquation.3.解:(1)設(shè)數(shù)列EMBEDEquation.DSMT4的公比為EMBEDEquation.DSMT4,由已知EMBEDEquation.DSMT4.由題意得EMBEDEquation.DSMT4,所以EMBEDEquation.DSMT4,因?yàn)镋MBEDEquation.DSMT4,所以EMBEDEquation.DSMT4,因此數(shù)列EMBEDEquation.DSMT4的通項(xiàng)公式為EMBEDEquation.DSMT4(2)過(guò)EMBEDEquation.DSMT4……EMBEDEquation.DSMT4向EMBEDEquation.DSMT4軸作垂線(xiàn),垂足分別為EMBEDEquation.DSMT4……EMBEDEquation.DSMT4,由(1)得EMBEDEquation.DSMT4記梯形EMBEDEquation.DSMT4的面積為EMBEDEquation.DSMT4.由題意EMBEDEquation.DSMT4,所以EMBEDEquation.DSMT4……+EMBEDEquation.DSMT4EMBEDEquation.DSMT4……+EMBEDEquation.DSMT4=1\*GB3①又EMBEDEquation.DSMT4……+EMBEDEquation.DSMT4=2\*GB3②=1\*GB3①—=2\*GB3②得EMBEDEquation.DSMT4=EMBEDEquation.DSMT4,EMBEDEquation.DSMT4.(20)【2017年山東,理20,13分】已知函數(shù)EMBEDEquation.DSMT4,EMBEDEquation.DSMT4,其中EMBEDEquation.DSMT4是自然對(duì)數(shù)的底數(shù).(1)求曲線(xiàn)EMBEDEquation.DSMT4在點(diǎn)EMBEDEquation.DSMT4處的切線(xiàn)方程;(2)令EMBEDEquation.DSMT4(EMBEDEquation.DSMT4),討論EMBEDEquation.DSMT4的單調(diào)性并判斷有無(wú)極值,有極值時(shí)求出極值.解:(1)由題意EMBEDEquation.DSMT4,又EMBEDEquation.DSMT4,所以EMBEDEquation.DSMT4,因此曲線(xiàn)EMBEDEquation.DSMT4在點(diǎn)EMBEDEquation.DSMT4處的切線(xiàn)方程為EMBEDEquation.DSMT4,即EMBEDEquation.DSMT4.(2)由題意得EMBEDEquation.DSMT4,因?yàn)镋MBEDEquation.DSMT4EMBEDEquation.DSMT4EMBEDEquation.DSMT4,令EMBEDEquation.DSMT4,則EMBEDEquation.DSMT4,所以EMBEDEquation.DSMT4在EMBEDEquation.DSMT4上單調(diào)遞增.所以當(dāng)EMBEDEquation.DSMT4時(shí),EMBEDEquation.DSMT4單調(diào)遞減,當(dāng)EMBEDEquation.DSMT4時(shí),EMBEDEquation.DSMT4當(dāng)EMBEDEquation.DSMT4時(shí),EMBEDEquation.DSMT4EMBEDEquation.DSMT4,當(dāng)EMBEDEquation.DSMT4時(shí),EMBEDEquation.DSMT4,EMBEDEquation.DSMT4單調(diào)遞減,當(dāng)EMBEDEquation.DSMT4時(shí),EMBEDEquation.DSMT4,EMBEDEquation.DSMT4單調(diào)遞增,所以當(dāng)EMBEDEquation.DSMT4時(shí)EMBEDEquation.DSMT4取得極小值,極小值是EMBEDEquation.DSMT4;當(dāng)EMBEDEquation.DSMT4時(shí),EMBEDEquation.DSMT4,由EMBEDEquation.DSMT4,得EMBEDEquation.DSMT4,EMBEDEquation.DSMT4,①當(dāng)EMBEDEquation.DSMT4時(shí),EMBEDEquation.DSMT4,當(dāng)EMBEDEquation.DSMT4時(shí),EMBEDEquation.DSMT4,EMBEDEquation.DSMT4單調(diào)遞增;當(dāng)EMBEDEquation.DSMT4時(shí),EMBEDEquation.DSMT4,EMBEDEquation.DSMT4單調(diào)遞減;當(dāng)EMBEDEquation.DSMT4時(shí),EMBEDEquation.DSMT4,EMBEDEquation.DSMT4單調(diào)遞增.所以當(dāng)EMBEDEquation.DSMT4時(shí)EMBEDEquation.DSMT4取得極大值.極大值為EMBEDEquation.DSMT4,當(dāng)EMBEDEquation.DSMT4時(shí)EMBEDEquation.DSMT4取到極小值,極小值是EMBEDEquation.DSMT4;②當(dāng)EMBEDEquation.DSMT4時(shí),EMBEDEquation.DSMT4,當(dāng)EMBEDEquation.DSMT4時(shí),EMBEDEquation.DSMT4,函數(shù)EMBEDEquation.DSMT4在EMBEDEquation.DSMT4上單調(diào)遞增,無(wú)極值;③當(dāng)EMBEDEquation.DSMT4時(shí),EMBEDEquation.DSMT4所以當(dāng)EMBEDEquation.DSMT4時(shí),EMBEDEquation.DSMT4,EMBEDEquation.DSMT4單調(diào)遞增;當(dāng)EMBEDEquation.DSMT4時(shí),EMBEDEquation.DSMT4,EMBEDEquation.DSMT4單調(diào)遞減;當(dāng)EMBEDEquation.DSMT4時(shí),EMBEDEquation.DSMT4,、EMBEDEquation.DSMT4單調(diào)遞增;所以當(dāng)EMBEDEquation.DSMT4時(shí)EMBEDEquation.DSMT4取得極大值,極大值是EMBEDEquation.DSMT4;當(dāng)EMBEDEquation.DSMT4時(shí)EMBEDEquation.DSMT4取得極小值.極小值是EMBEDEquation.DSMT4.綜上所述:當(dāng)EMBEDEquation.DSMT4時(shí),EMBEDEquation.DSMT4在EMBEDEquation.DSMT4上單調(diào)遞減,在EMBEDEquation.DSMT4上單調(diào)遞增,函數(shù)EMBEDEquation.DSMT4有極小值,極小值是EMBEDEquation.DSMT4;當(dāng)EMBEDEquation.DSMT4時(shí),函數(shù)EMBEDEquation.DSMT4在EMBEDEquation.DSMT4和EMBEDEquation.DSMT4和EMBEDEquation.DSMT4上單調(diào)遞增,在EMBEDEquation.DSMT4上單調(diào)遞減,函數(shù)EMBEDEquation.DSMT4有極大值,也有極小值,極大值是EMBEDEquation.DSMT4,極小值是EMBEDEquation.DSMT4;當(dāng)EMBEDEquation.DSMT4時(shí),函數(shù)EMBEDEquation.DSMT4在EMBEDEquation.DSMT4上單調(diào)遞增,無(wú)極值;當(dāng)EMBEDEquation.DSMT4時(shí),函數(shù)EMBEDEquation.DSMT4在EMBEDEquation.DSMT4和EMBEDEquation.DSMT4上單調(diào)遞增,在EMBEDEquation.DSMT4上單調(diào)遞減,函數(shù)E
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