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1、2014 年江苏高考数学试题数学试题参考公式:圆柱的侧面积公式:S圆柱=cl,其中 c 是圆柱底面的周长,l 为母线长.圆柱的体积公式:V圆柱=Sh,其中 S是圆柱的底面积,h 为高.一、填空题:本大题共14 小题,每小题5 分,共计70 分.请把答案填写在答题卡相应位置上.1已知集合 21 3 4A,1 2 3B,则 AB【答案】1 3,2已知复数2(52)zi(i 为虚数单位),则 z的实部为【答案】21 3右图是一个算法流程图,则输出的n 的值是【答案】5 4从 1 2 3 6,这 4 个数中一次随机地取2 个数,则所取2个数的乘积为6 的概率是【答案】135已知函数cosyx与sin(
2、2)(0)yx,它们的图象有一个横坐标为3的交点,则的值是【答案】66为了了解一片经济林的生长情况,随机抽测了其中60 株树木的底部周长(单位:cm),所得数据均在区间80130,上,其频率分布直方图如图所示,则在抽测的60 株树木中,有株树木的底部周长小于100 cm【答案】24 7在各项均为正数的等比数列na中,若21a,8642aaa,则6a 的值是【答案】4 8设甲、乙两个圆柱的底面积分别为12SS,体积分别为12VV,若它们的侧面积相等,且1294SS,则12VV的值是【答案】329在平面直角坐标系xOy 中,直线230 xy被圆22(2)(1)4xy截得的弦长为【答案】2 5551
3、0已知函数2()1f xxmx,若对任意1xm m,都有()0f x成立,则实数 m 的取值范围是【答案】202,11在平面直角坐标系xOy 中,若曲线2byaxx(a b,为常数)过点(25)P,且该曲线在点P 处的切线与直线7230 xy平行,则ab的值是【答案】312如图,在平行四边形ABCD 中,已知,85ABAD,32CPPDAP BP,则 AB AD 的值是【答案】22 13 已知()fx 是定义在R 上且周期为3 的函数,当03)x,时,21()22f xxx 若函数()yf xa在区间 3 4,上有 10 个零点(互不相同),则实数a 的取值范围是【答案】102,14若ABC的
4、内角满足sin2sin2sinABC,则cosC的最小值是【答案】624二、解答题:本大题共6小题,共计 90 分.请在答题卡指定区域内作答,解答时应写出文字说明、证明过程或演算步骤.15(本小题满分14 分)已知2,5sin5(1)求sin4的值;(2)求 cos26的值文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F
5、1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7
6、Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4
7、N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z
8、1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1
9、D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7
10、Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L
11、8Z1F1【答案】本小题主要考查三角函数的基本关系式、两角和与差及二倍角的公式,考查运算求解能力.满分 14 分.(1)5sin25,225cos1sin5210sinsincoscossin(cossin)444210;(2)2243sin 22sincoscos2cossin55,33143 34cos2coscos2sinsin 266625251016(本小题满分14 分)如图,在三棱锥PABC中,DEF,分别为棱PCACAB,的中点已知6PAACPA,8BC,5DF(1)求证:直线PA平面 DEF;(2)平面 BDE平面 ABC【答案】本小题主要考查直线与直线、直线与平面以及平面与平
12、面的位置关系,考查空间想象能力和推理论证能力.满分 14 分.(1)DE,为 PCAC,中点 DEPAPA平面 DEF,DE平面 DEF PA平面 DEF(2)DE,为 PCAC,中点132DEPA EF,为 ACAB,中点142EFBC222DEEFDF90DEF,DEEF/DEPA PAAC,DEAC ACEFE DE平面 ABCDE平面 BDE,平面 BDE 平面 ABC17(本小题满分14 分)如图,在平面直角坐标系xOy 中,12FF,分别是椭圆22221(0)yxabab的左、右焦点,顶点B 的坐标为(0)b,连结2BF 并延长交椭圆于点A,过点 A 作 x 轴的垂线交椭圆于另一点
13、 C,连结1FC(1)若点 C 的坐标为4133,且22BF,求椭圆的方程;(2)若1FCAB,求椭圆离心率e 的值文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8
14、Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H
15、1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T
16、7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9
17、L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM
18、4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ1
19、0T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1【答案】本小题主要考查椭圆的标准方程与几何性质、直线与直线的位置关系等基础知识,考查运算求解能力.满分 14 分.(1)4133C,22161999
20、ab22222BFbca,22(2)2a,21b椭圆方程为2212xy(2)设焦点12(0)(0)()FcF cC xy,A C,关于 x 轴对称,()A xy,2BFA,三点共线,bybcx,即0bxcybc1FCAB,1ybxcc,即20 xcbyc联立方程组,解得2222222caxbcbcybc2222222a cbcCbcbc,C 在椭圆上,222222222221a cbcbcbcab,化简得225ca,55ca,故离心率为5518(本小题满分16 分)如图,为保护河上古桥OA,规划建一座新桥BC,同时设立一个圆形保护区规划要求:新桥 BC 与河岸 AB 垂直;保护区的边界为圆心M
21、 在线段 OA 上并与 BC 相切的圆,且古桥两端 O 和 A 到该圆上任意一点的距离均不少于80m经测量,点A 位于点 O 正北方向60m 处,点C 位于点 O 正东方向 170m 处(OC 为河岸),4tan3BCO(1)求新桥BC 的长;(2)当 OM 多长时,圆形保护区的面积最大?解:本小题主要考查直线方程、直线与圆的位置关系和解三角形等基础知识,考查建立数学模型及运用数学知识解决实际问题的能力.满分 16 分.解法一:(1)如图,以 O 为坐标原点,OC 所在直线为x 轴,建立平面直角坐标系 xOy.由条件知A(0,60),C(170,0),直线 BC 的斜率 kBC=tanBCO=
22、43.文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1
23、D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7
24、Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L
25、8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4
26、H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10
27、T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A
28、9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1又因为 ABBC,所以直线AB 的斜率 kAB=34.设点 B 的坐标为(a,b),则 kBC=04,1703bakAB=603,04ba解得 a=80,b=120.所以 BC=22(170 80)(0120)150.因此新桥BC 的长是 150 m.(2)
29、设保护区的边界圆M 的半径为 r m,OM=d m,(0d60).由条件知,直线BC 的方程为4(170)3yx,即436800 xy由于圆 M 与直线 BC 相切,故点M(0,d)到直线 BC 的距离是 r,即|3680|680355ddr.因为 O 和 A 到圆 M 上任意一点的距离均不少于80 m,所以80(60)80rdrd即68038056803(60)805dddd解得1035d故当 d=10 时,68035dr最大,即圆面积最大.所以当 OM=10 m 时,圆形保护区的面积最大.解法二:(1)如图,延长OA,CB 交于点 F.因为 tanBCO=43.所以 sinFCO=45,c
30、osFCO=35.因为 OA=60,OC=170,所以 OF=OC tan FCO=6803.CF=850cos3OCFCO,从而5003AFOFOA.因为 OAOC,所以 cosAFB=sin FCO=45,又因为 ABBC,所以 BF=AF cosAFB=4003,从而 BC=CFBF=150.因此新桥BC 的长是 150 m.(2)设保护区的边界圆M 与 BC 的切点为D,连接 MD,则 MDBC,且 MD 是圆 M 的半文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档
31、编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S
32、8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M
33、8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1
34、文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q
35、5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N
36、6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1
37、F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1径,并设MD=r m,OM=d m(0 d60).因为 OAOC,所以 sinCFO=cosFCO,故由(1)知,sinCFO=3,68053MDMDrMFOFOMd所以68035dr.因为 O 和 A 到圆 M 上任意一点的距离均不少于80 m,所以80(60)80rdrd即68038056803(60)805dddd解得1035d故当 d=10 时,68035dr最大,即圆面积最大.所以当 OM=10 m 时,圆形保护区的面
38、积最大.19(本小题满分16 分)已知函数()eexxf x其中 e是自然对数的底数(1)证明:()f x 是R上的偶函数;(2)若关于x 的不等式()e1xmf xm在(0),上恒成立,求实数m 的取值范围;(3)已知正数a 满足:存在01)x,使得3000()(3)f xaxx成立试比较1ea与e 1a的大小,并证明你的结论【答案】本小题主要考查初等函数的基本性质、导数的应用等基础知识,考查综合运用数学思想方法分析与解决问题的能力.满分 16 分.(1)xR,()ee()xxfxf x,()f x 是R上的偶函数(2)由题意,(ee)e1xxxmm,即(ee1)e1xxxm(0)x,ee1
39、0 xx,即e1ee1xxxm对(0)x,恒成立令e(1)xtt,则211tmtt对任意(1)t,恒成立2211111(1)(1)113111tttttttt,当且仅当2t时等号成立13m(3)()eexxfx,当1x时()0fx,()f x 在(1),上单调增令3()(3)h xaxx,()3(1)h xax x01ax,()0h x,即()h x 在(1)x,上单调减文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 Z
40、C9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编
41、码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8
42、 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8
43、 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文
44、档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5
45、S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6
46、M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1存在01)x,使得3000()(3)f xaxx,1(1)e2efa,即11e2eae-1e 111lnlnln e(e1)ln1eaaaaaa设()(e1)ln1m aaa,则e1e111()1e2eam aaaa,当11ee12ea时,()0m a,()m a 单调增;当e1a时,()0m a,()m a 单调减因此()m a 至多有两个零点,而(1)(e)0mm当ea时,()0m a,e 11eaa;当11ee2ea时,()0m a,e 11eaa;当ea时,()0m a,e 1
47、1eaa20(本小题满分16分)设数列 na的前 n项和为nS 若对任意的正整数n,总存在正整数m,使得nmSa,则称 na是“H 数列”(1)若数列 na的前 n 项和2()nnSnN,证明:na是“H 数列”;(2)设 na是等差数列,其首项11a,公差0d若 na是“H 数列”,求 d 的值;(3)证明:对任意的等差数列na,总存在两个“H 数列”nb和 nc,使得()nnnabcnN成立【答案】本小题主要考查数列的概念、等差数列等基础知识,考查探究能力及推理论证能力,满分 16分.(1)当2n时,111222nnnnnnaSS当1n时,112aS1n时,11Sa,当2n时,1nnSa
48、na是“H 数列”(2)1(1)(1)22nn nn nSnadnd对nN,mN 使nmSa,即(1)1(1)2n nndmd取2n得 1(1)dmd,12md0d,2m,又 mN,1m,1d文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F
49、1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7
50、Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4N6M8 ZC9A9L8Z1F1文档编码:CM4H1D7Q5S8 HQ10T7Z4