广西省崇左市2019年数学高一上学期期末学业水平测试试题
发布时间:2019-11-04 18:18:27
发布时间:2019-11-04 18:18:27
广西省崇左市2019年数学高一上学期期末学业水平测试试题
一、选择题
1.若word/media/image1_1.png,则函数word/media/image2_1.png的单调递增区间为( )
A.word/media/image3_1.png B.word/media/image4_1.png C.word/media/image5_1.png D.word/media/image6_1.png
2.已知在word/media/image7_1.png中,word/media/image8_1.png,则word/media/image7_1.png的形状是
A.锐角三角形 B.钝角三角形
C.等腰三角形 D.直角三角形
3.已知word/media/image9_1.png,word/media/image10_1.png,word/media/image11_1.png,则word/media/image12_1.png( )
A.word/media/image13_1.png B.word/media/image14_1.png C.word/media/image15_1.png D.word/media/image16_1.png
4.直线word/media/image17_1.png绕它与word/media/image18_1.png轴的交点顺时针旋转word/media/image16_1.png,得到直线word/media/image19_1.png,则直线word/media/image17_1.png的方程是( )
A.word/media/image20_1.png B.word/media/image21_1.png
C.word/media/image22_1.png D.word/media/image23_1.png
5.函数word/media/image24_1.png的部分图象如图所示,则函数表达式为
A.word/media/image26_1.png B.word/media/image27_1.png
C.word/media/image28_1.png D.word/media/image29_1.png
6.在word/media/image7_1.png中,点word/media/image30_1.png是线段word/media/image31_1.png上任意一点,word/media/image32_1.png是线段word/media/image33_1.png的中点,若存在实数word/media/image34_1.png和word/media/image35_1.png,使得word/media/image36_1.png,则word/media/image37_1.png
A.word/media/image38_1.png B.word/media/image39_1.png
C.word/media/image40_1.png D.word/media/image41_1.png
7.已知数列为等差数列,若,且其前项和有最大值,则使得的最大值为
A.11 B.19 C.20 D.21
8.若将函数word/media/image47_1.png的图象向左平移word/media/image48_1.png个单位长度,则平移后图象的对称轴为( )
A.word/media/image49_1.png B.word/media/image50_1.png
C.word/media/image51_1.png D.word/media/image52_1.png
9.已知两个不同的平面word/media/image53_1.png和两条不重合的直线word/media/image54_1.png,有下列四个命题:
①若word/media/image55_1.png,则word/media/image56_1.png;
②若word/media/image57_1.png,则word/media/image58_1.png;
③若word/media/image59_1.png,则word/media/image60_1.png;
④若word/media/image61_1.png,则word/media/image62_1.png.
其中真命题的个数是( )
A.0 B.1 C.2 D.3
10.将1000名学生的编号如下:0001,0002,0003,…,1000,若从中抽取50个学生,用系统抽样的方法从第一部分0001,0002,…,0020中抽取的号码为0015时,抽取的第40个号码为( )
A.0795 B.0780 C.0810 D.0815
11.随机掷两枚质地均匀的骰子,它们向上的点数之和不超过5的概率记为p1,点数之和大于5的概率记为p2,点数之和为偶数的概率记为p3,则( )
A.p1<p2<p3 B.p2<p1<p3
C.p1<p3<p2 D.p3<p1<p2
12.已知word/media/image63_1.png在R上是奇函数,且word/media/image64_1.png
A.-2 B.2 C.-98 D.98
二、填空题
13.已知等比数列word/media/image65_1.png的前word/media/image66_1.png项和为word/media/image67_1.png,word/media/image68_1.png,则word/media/image69_1.png的值是__________.
14.如图,一热气球在海拔60m的高度飞行,在空中A处测得前下方河流两侧河岸word/media/image70_1.png,word/media/image71_1.png的俯角分别为75°,30°,则河流的宽度word/media/image31_1.png等于_____m.
15.函数word/media/image73_1.png的值域为____________
16.如图中,已知点在上,,则的长为 .
三、解答题
17.在平面直角坐标系word/media/image80_1.png中,已知点word/media/image81_1.png,word/media/image82_1.png,word/media/image83_1.png.
(Ⅰ)求word/media/image84_1.png的坐标及word/media/image85_1.png;
(Ⅱ)当实数word/media/image86_1.png为何值时,word/media/image87_1.png.
18.在word/media/image88_1.png中,角word/media/image89_1.png、word/media/image70_1.png、word/media/image71_1.png的对边分别为word/media/image90_1.png、word/media/image91_1.png、word/media/image92_1.png,已知word/media/image93_1.png.
(1)求角word/media/image70_1.png的大小;
(2)若word/media/image94_1.png,点word/media/image30_1.png在word/media/image95_1.png边上,且word/media/image96_1.png,word/media/image97_1.png,求word/media/image92_1.png边的长.
19.已知函数word/media/image98_1.png
(1)求证:word/media/image99_1.png
(2)若函数word/media/image100_1.png的图象与直线word/media/image101_1.png没有交点,求实数word/media/image90_1.png的取值范围;
(3)若函数word/media/image102_1.png,则是否存在实数word/media/image103_1.png,使得word/media/image104_1.png的最小值为word/media/image105_1.png?若存在,求出word/media/image103_1.png的值;若不存在,请说明理由.
20.已知某观光海域AB段的长度为3百公里,一超级快艇在AB段航行,经过多次试验得到其每小时航行费用Q(单位:万元)与速度v(单位:百公里/小时)(0≤v≤3)的以下数据:
为描述该超级快艇每小时航行费用Q与速度v的关系,现有以下三种函数模型供选择:Q=av3+bv2+cv,Q=0.5v+a,Q=klogav+b.
(1)试从中确定最符合实际的函数模型,并求出相应的函数解析式;
(2)该超级快艇应以多大速度航行才能使AB段的航行费用最少?并求出最少航行费用.
21.已知数列word/media/image108_1.png前word/media/image109_1.png项和为word/media/image110_1.png, word/media/image111_1.png,且满足word/media/image112_1.png(word/media/image113_1.png).
(Ⅰ)求数列word/media/image114_1.png的通项公式;
(Ⅱ)若word/media/image115_1.png,设数列word/media/image116_1.png前word/media/image117_1.png项和为word/media/image118_1.png,求证: word/media/image119_1.png.
22.数列word/media/image65_1.png的前n项和word/media/image67_1.png满足word/media/image120_1.png.
(1)求证:数列word/media/image121_1.png是等比数列;
(2)若数列word/media/image122_1.png为等差数列,且word/media/image123_1.png,求数列word/media/image124_1.png的前n项word/media/image125_1.png.
【参考答案】***试卷处理标记,请不要删除
一、选择题
二、填空题
13.10
14.word/media/image126_1.png
15.word/media/image127_1.png
16.
三、解答题
17.(Ⅰ)word/media/image129_1.png,word/media/image130_1.png;(Ⅱ)word/media/image131_1.png
18.(1)word/media/image132_1.png;(2)word/media/image133_1.png.
19.(1)略;(2)word/media/image134_1.png;(3)word/media/image135_1.png
20.(1)选择函数模型word/media/image136_1.png,函数解析式为word/media/image137_1.png;(2)以1百公里/小时航行时可使AB段的航行费用最少,且最少航行费用为2.1万元.
21.(Ⅰ)word/media/image138_1.png(Ⅱ)详略
22.(1)见证明;(2) word/media/image139_1.png