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2019-2020学年河南省新乡市新乡一中高二上学期期末考试数学(文)试题

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.(2)若ρ八q是真命题,求m的取值范围 (1)若p是真命题,求m的取值范围; =O表示 一个圆. 已知户 :�二 十产 二 = l表示焦点在工轴上的双曲线,q:方程五十 y2 - 2x- 2my +2m2 -3哇 m i ←- rn 17. (10分〉 三、解答题:本大题共6小题,共70分.解答应写出文字说明、证明过程或演算步骤. 于A,B两点,AF1 J__AB,4IAF1 I =3 IABI,则C的离心率为 • 16.已知双曲线C:至 _i_ =l(α>O,b>O)的左、右焦点分别为F1,F2,过F2 的直线交C的右支. az bz Sl',ABC = A 15.在6.ABC中,内角A,B,C所对的边分别为G,b,c.若c =/2b, cos B =/2 cos C, α=J言,则 4 a-3 14.已知α>3,则÷一十 的最小值为 •a 3 16 13.设命题 户:对于任意的工ε [0,2叶,Isin xiζ1,则「户为 A 二、填空题:本大题共4小题,每小题5分,共20分.把答案填在答题卡中的横线上. 39 「D.C =, -41 第 E 卷 A. (-16,一10) 39 「B. C-16, -4 J 39 寸C. C 10,一 τ | 围为 意一点,且P在第一象限,0为坐标原点,FC3,0)为椭圆C的右焦点,则oJ声. PF的取值范 12.椭圆C:兰+妥=l(α>b>O)的长轴 长、短轴长和焦距成等差数列,若点P为椭圆C上的任a- o- A. zsoso B. z5ooo C. zmo D. 249so 11.设S" 是数列(αJ的前n项和,若a,, 十S,, =2”,则(2α2 -a1 )(2α3 -a2) … (2α100 -agg) = A. 2e B. e C. 三 D. e十i 10.偶函数J(x) =x(e"-ae一寸的图象在x = l处的切线斜率为 D. -16 n-1 A. -3 B. -5 C. -14 IY咛z十4, 9.设立,y满足约束条件才y《 -2x-l, 则z=4x十y的最小值为 r 1 2 IY二三一-x 十一,I 3 3 A._l B主 C.0· 2e · e2 在叫]上的最大值是ڎ=(8函数f(x A. (0,2) B. (0,2] C. (0,3) D. (0,3] 的充分不必要条件,则b-a 的取值范围为 x2十Z-2 《。” α《z《b ”是“ 7.设 工εR,α<b,若“ A豆_i_=l B £._i. =l C £.一豆=l D至一豆 =l. 16 9 . 3 4 . 9 16 . 32 18 方程为 4 ’ 6.已知双曲线C: 至一i.= l(α>O b>O)的一条渐近线的斜率为主 佳距为10,则双曲线C的. a 2 b2 ’ A. -1 B. 1 C. 3 D. 3 C.x = 一 去 D.y= 一 1 C. 5 D. 4 5若函数f(x) =x2+士,则/C-1) = 16 A. y=l B. x = _l 4抛物线y= tx2 的准线方程为 A. 7 B. 6 3在6ABC中,角A,B,C的对边分别是边叫,c,若α=3/3,c = Z,A+C= 号,则b = A. 8 B. 9 C. 11 D. 12 2.在等差数列(α11 }中,α2十αg = l2,向 =3,则由 = C.若|α|=|训,则α2 =b2 D.若|α|手 I bl,则α2手b2 A. 若α2= b 2 ,则|αl#lb l B.若α2 学b 2 ,则|α|手I b l 的逆命题为 若a2 =b 2,则|αI =lb | ” “ 1.命题 符合题目要求的. 一、选择题:本大题共12小题,每小题5分,共60分.在每小题给出的四个选项中,只有 一项是 第 I 卷 3.本试卷主要考试内容:人教A版必修5,选修1-1. 2.请将各题答案填在答题卡上. 1.本试卷分第 I 卷(选择题)和第 E 卷(非选择题)两部分,共150分.考试时间120分钟. 考生注意: 数学试卷(文科) 朴 ꟤ I 悔 ﯻ 我1 f主 怜 悟H 赳E E自 1型 明 带 n)ri 18. (12分) 已知数列(α”)满足α1 = 1, α11+1 二 3α”+2. (1)证明:数列{a"+l}是等比数列; 2 (2)设 b,,= ,求数列{b㌌ }的前n项和S".u十] a I ?十1log3(�一) • lo以 4仁) 19. (12分) D.ABC的内角 A,B,C的对边分别为a ,b,c ,且〔cos B =子b Cl)求A 卜 。问(2)若c =4J言,cos B=」丘,求D.ABC的面积.10 20. (12分) 已知椭圆寻+并=l(α>b>O)的左、右焦点分别为F1Cl,O),F2(-l,O),斜率为1的直线Ja- o- 交椭圆 于A,B 两点,且线段 AB 的中点 坐标为( - 1.2,0 .9). (1)求椭圆的方程; (2)若P是椭圆与双曲线4x2一丝�=l在第一象限的交点,求cosζF1PF2的值 .3 [新乡市高二上学期期末考试数学试卷 第3页(共4页)文科] • 19-12-169B • 21. (12分) 已知过点 M(2 ,3)的直线 J 与抛物线 E :Y 2 =8x 交于点 A,B. (1)若弦 AB的中点为M,求直线t的方程; (2) 设。为坐标原点, OA 上 OB,求IABI. 22. (12分〉 设函数J(x )= α ln x+x 2 - l. Cl)讨论 f(x)的单调性; (2)当 zε [J2, +oo)时, f(x)㈉0,求α的取值范围. [新乡市高二上学期期末考试数学试卷 第4页(共4页)文科] · 19 12-169B • ꉓ 址 漨 ❐ 剖 烟 口讲 阁 书书书 ,'+-.*/0!12" !!(!!"#$%&'()*#$%+!, " ) # "-"%)#%#! %!'!.+"%*"#)""*"+"/0!%),*"+"12"+)#! ,!-!.+$*%)! &"/0&).! &!345'62#%)"%*'%$%"'/01& 槡)%+*"$%2,,2%2$$槡, %%)"#" 7#)+! "!3!3()! 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