2019届高考数学二轮复习小题标准练(十).doc

上传人:孙刚 文档编号:936935 上传时间:2019-03-05 格式:DOC 页数:8 大小:1.13MB
下载 相关 举报
2019届高考数学二轮复习小题标准练(十).doc_第1页
第1页 / 共8页
2019届高考数学二轮复习小题标准练(十).doc_第2页
第2页 / 共8页
2019届高考数学二轮复习小题标准练(十).doc_第3页
第3页 / 共8页
2019届高考数学二轮复习小题标准练(十).doc_第4页
第4页 / 共8页
2019届高考数学二轮复习小题标准练(十).doc_第5页
第5页 / 共8页
点击查看更多>>
资源描述

1、1高考小题标准练(十)满分 80 分,实战模拟,40 分钟拿下高考客观题满分!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,只有一项是符合题目要求的)1.已知集合 A=x|-1a1”是“log ax0”的 ( )A.充分而不必要条件 B.必要而不充分条件C.充分必要条件 D.既非充分也非必要条件【解析】选 A.若 logax0=loga1,当 0a1 时,则 logaxloga1=0,充分性成立,故“xa1”是“log ax0”的充分而不必要条件.7.口袋中装有大小、轻重都无差别的 5 个红球和 4 个白球,每一次从袋中摸出 2 个球,若颜色不同,则

2、为中奖,每次摸球后,都将摸出的球放回口袋中,则 3 次摸球恰有 1 次中奖的概率为 ( )A. B. C. D.100243 1007293【解析】选 A.每次摸球中奖的概率为 = = ,由于是有放回地摸球,141529203659故 3 次摸球相当于 3 次独立重复试验,所以 3 次摸球恰有 1 次中奖的概率P= 1- 2= .1359 598.函数 y= 的部分图象可能是 ( )【解析】选 C.易知函数 y= 为奇函数,图象关于原点对称,排除 B;当 x=1 时,y= 1,排除 D.4129.已知角 的终边经过点(m,-2m),其中 m0,则 sin +cos 等于( )A.- B. 4C

3、 D.35 35【解析】选 B.因为角 的终边经过点(m,-2m),其中 m0,所以 m0 时,sin = =- ,cos = = ,所以 sin +cos =- ;m19.S= + + + = - + - + - = .1212141416 11811.若函数 f(x)= sin(-x)+sin +x (0),且 f()=2,52f()=0,|-|的最小值是 ,则 f(x)的单调递增区间是 ( )2A. (kZ)B. (kZ)C. (kZ)D. (kZ)【解析】选 A.由题意可得 f(x)= sin(-x)+sin +x = sin x+52cos x=2sin x+ ,由 f()=2,

4、f()=0,|-|的最小值是 ,所以 = = ,6 2 1422所以 =1,f(x)=2sin x+ .66令 2k- x+ 2k+ ,kZ,求得 2k- x2k+ ,2 6 2 23 3故函数的增区间为 (kZ).12.已知函数 f(x)= 若数列a n满足 an=f(n)(nN *),且a n是(1-2)+5(12),-13(12), 递减数列,则实数 a 的取值范围是 ( )A. B.(12,1) (12,34)C. D.(12,23) (34,1)【解析】选 C.由已知可得 1-2aa13=1,解得 0)的焦点,过 F 作倾斜角为 30的直线 l 与抛物线 E 交于A,B 两点,过 A

5、B 向 E 的准线作垂线,垂足分别为 C,D,设 CD 的中点为 M,则|MF|=_. 7【解析】直线的方程为 y-0= x-= x- p,联立直线和抛物线的方程得 4x2-28px+p2=0,设 A(x1,y1),B(x2,y2),则 x1+x2=7p,所以 AB 的中点 N 的横坐标为 = p,1+22 72所以 N 的纵坐标为 y= p- p= p.72所以|MF|= =2p.答案:2p15.在ABC 中,sin B=3 sin A,BC= ,且 C= ,则 AB 边上的高为_. 4【解析】根据正弦定理可得 b=3 a,由 BC= 可得 AC=6,由余弦定理:cos = c= ,设 A

6、B 边上的高为 h,由等面积法可得: absin 42+2-22 26 12C= chh= ,故 AB 边上的高为 .12答案:16.已知函数 f(x)=sin(x+) ,若 f =f =0,则(512)f()=_. 【解析】因为周期 T= ,280 .223因为 - = ,2因为 f =f =0,(512)所以 , 为相邻的平衡点.所以 T= = 2=,22所以 =2.所以 f(x)=sin(2x+) .因为 f =0,所以 sin =sin =0,(2(-12)+) (-6+)所以- +=k,6所以 = +k(kZ).6因为| ,所以 = .2 6所以 f(x)=sin ,(2+6)所以 f()=sin =sin = .612答案:12

展开阅读全文
相关资源
猜你喜欢
  • DIN 38406-17-2009 de 2868 German standard methods for the examination of water waste water and sludge - Cations (group E) - Part 17 Determination of uranium - Method using adsorpti.pdf DIN 38406-17-2009 de 2868 German standard methods for the examination of water waste water and sludge - Cations (group E) - Part 17 Determination of uranium - Method using adsorpti.pdf
  • DIN 38406-18-1990 German standard methods for the examination of water waste water and sludge cations (group E) determination of dissolved silver by atomic absorption spectrometry .pdf DIN 38406-18-1990 German standard methods for the examination of water waste water and sludge cations (group E) determination of dissolved silver by atomic absorption spectrometry .pdf
  • DIN 38406-2-1983 German standard methods for the examination of water waste water and sludge cations (group E) determination of manganese (E 2)《德国检验水、废水和污泥的标准方法 阳离子(E组) 锰的测定(E 2)》.pdf DIN 38406-2-1983 German standard methods for the examination of water waste water and sludge cations (group E) determination of manganese (E 2)《德国检验水、废水和污泥的标准方法 阳离子(E组) 锰的测定(E 2)》.pdf
  • DIN 38406-21-1980 German standard methods for the examination of water waste water and sludge cations (group E) determination of nine heavy metals (Ag Bi Cd Co Cu Ni Pb Tl Zn) (E21.pdf DIN 38406-21-1980 German standard methods for the examination of water waste water and sludge cations (group E) determination of nine heavy metals (Ag Bi Cd Co Cu Ni Pb Tl Zn) (E21.pdf
  • DIN 38406-24-1993 German standard methods for the examination of water waste water and sludge cations (group E) determination of cobalt by atomic absorption spectrometry (AAS) (E 2.pdf DIN 38406-24-1993 German standard methods for the examination of water waste water and sludge cations (group E) determination of cobalt by atomic absorption spectrometry (AAS) (E 2.pdf
  • DIN 38406-26-1997 en 2667 German standard methods for the examination of water waste water and sludge - Cations (group E) - Part 26 Determination of thallium by atomic absorption s.pdf DIN 38406-26-1997 en 2667 German standard methods for the examination of water waste water and sludge - Cations (group E) - Part 26 Determination of thallium by atomic absorption s.pdf
  • DIN 38406-3-2002 German standard methods for the examination of water waste water and sludge - Cations (group E) - Part 3 Determination of calcium and magnesium complexometric meth.pdf DIN 38406-3-2002 German standard methods for the examination of water waste water and sludge - Cations (group E) - Part 3 Determination of calcium and magnesium complexometric meth.pdf
  • DIN 38406-32-2000 German standard methods for the examination of water waste water and sludge - Cations (group E) - Part 32 Determination of iron by atomic absorption spectrometry .pdf DIN 38406-32-2000 German standard methods for the examination of water waste water and sludge - Cations (group E) - Part 32 Determination of iron by atomic absorption spectrometry .pdf
  • DIN 38406-33-2000 German standard methods for the examination of water waste water and sludge - Cations (group E) - Part 33 Determination of manganese by atomic absorption spectrom.pdf DIN 38406-33-2000 German standard methods for the examination of water waste water and sludge - Cations (group E) - Part 33 Determination of manganese by atomic absorption spectrom.pdf
  • 相关搜索

    当前位置:首页 > 考试资料 > 中学考试

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1