石家庄市2023~2024学年度第一学期期末教学质量检测
高二数学
(时间120分钟,满分150)
注意事项:
本试卷分为第1卷(选择题)和第Ⅱ卷(非选择题)两部分,答第1卷前,考生务必将自己的姓名、作考证号、
考试科目写在答题卡上。
第1卷(选择题,共60分】
一、单项选择题(本大题共8个小题,每小题5分,共40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.直线、√6x+√2y-1=0的倾斜角为()
A.30
B.60°
C.120°
D.150
2.空间直角坐标系O-3z中,平行四边形ABCD的A、B、C三点坐标分别为A(1,2,3),B(2,-1,0)
C(-1,2,0),则D的坐标为()
A.(0,-1,-3)
B.(-2,5,3)
C.(4,-1,3)
D.(3,-2,0)
3.若圆心坐标为(2,2)的圆被直线x+y=0截得的弦长为4√互,则该圆的-般方程为()
A.x2+y2-4x-4y-8=0
B.x2+y2+4x+4y-8=0
C.x2+y2-4x-4y-16=0
D.x2+y2+4x+4y+4=0
4.设数列{a}是等比数列,且a,+a2+4,=1,42+4,+a=2,则a+a+a=()
A.12
B.24
C.30
D,32
5.将一颗酸子先后抛掷2次,观察向上的点数,将第一次向上的点数记为m,第二次向上的点数记为,则
nA
8
c
6.若抛物线y2=2x(p>0)上的点A(x,√2)到其焦点的距离是A到)y轴距离的3倍、则p=()
A号
B.1
c
D.2
7.斐波那契数列因意大利数学家斐波那契以兔子繁殖为例引人,故又称为兔子数列,即1,1,2,3,5,
8,13,21,34,55,89,144,233,…在实际生活中,很多花朵(如梅花、飞燕草、万寿菊等)的瓣数
恰是斐波那契数列中的数,斐波那契数列在现代物理及化学等领域也有着广泛的应用。斐波那契数列
{a,}满足:a,=4=l,a2=a1+a,(n∈N),则1+a+a+a,+…+a是斐波那奖数列{a,}中的第
()项
A.2020
B.2021
C.2022
D.2023
高二数学第1页(共4页)
8.在三梭锥A-BCD中,AB=AC=BD=CD=3,AD=BC=4,E是BC的中点,F满足F=D,则
异而直线AE,CF所成角的余弦值为()
A号
B.36
5
C元
10
D.30
10
二、多项选择题(本大题共4小题,每小题5分,共20分在每小题给的四个选项中,有多项符合题目要求,
全部选对得5分,选对但不全的得2分,有选错的得0分.)
9.袋子中有六个大小质地相同的小球,编号分别为1,2,3,4,5,6,从中机摸出两个球,设事件A为摸
出的小球编号都为奇数,事件B为摸出的小球编号之和为偶数,事件C为摸出的小球编号恰好只有一个奇
数,则下列说法全部正确的是()·
A.事件A与B是互斥事件
B.事件A与C是互斥事件
C.事件B与C是对立事件
D.事件A与B相互独立
10.已知椭圆C:士+
62
=1的左右焦点分别为F,F,P是椭圆C上的动点,点A(L,1),则下列结论正确的
是()
A.IPFI+IPE =2V
B.△PFF而积的最大值是√2
C椭圆C的离心率为y5
D.PF+P4最小值为2W6-√反
11.已知向量a=1,2,2),b=(-2,1),则下列说法不正确的是()
A.向量(-2,4,4)与向量a、b共面
B向量6在向量a上的投影狗量为写号韵
C若两个不同的平面a,B的法向量分别是a,b,则a⊥B
D.若平面a的法向量是a,直线/的方向向量是b,则直线/与平面α所成角的余弦值为
12在数学课堂上,教师引导学生构造新数列:在数列的每相邻两项之间插入此两项的和,形成新的数
列,再把所得数列按照同样的方法不断构造出新的数列,将数列1,2进行构造、第1次得到数列1,
3,2;第2次得到数列1,4,3,5,2;“;第n(neN)次得到数列1,,,,…,x,2:
….记an=1+x+名2++x+2,数列{a}的前n项和为S,则()
A.k+1=2
B.a =3d-3
ca-r+3列D.3-20+2m-3)
3
高二数学第2页(共4页)石家庄市 2023-2024 学年度第一学期阶段性检测 0 ( 2)
所以圆心到直线的距离 d 2,················································· 4分
高二数学答案 2
一、单项选择题
设直线与圆交于 A、B两点,则弦长 AB = 2 5-2=2 3
1~5 CBADD 6~8 DCD
二、多项选择题 故直线 y x被圆C截得的弦长为2 3 .························································ 6分
9. BC 10. ACD 11. ACD 12. ABD
(Ⅱ)由C : x2 2 2 x y2 2 y 3 2 0 ,
三、填空题
3 2 129
13. 14. 15. 16. 1,2 得 2x 2 y 2 2 2 2 +1,·················································· 8分10 5 130
因为直线 y x与圆C没有公共点,
四、解答题
17.解:(Ⅰ)因为向量a ( 1, 2)是直线 l的一个方向向量,所以 l斜率 k 2,·····2分 2所以 2 2 2 1,即2 2 2 1 0,················································10分
又 l因为经过点 P(3, 4) ,则 l方程为: y 4 2 x 3 ,即: 2x y 10 0 . 1 3
解得:
1 3
,
2 2
故直线 l的方程为 2x y 10 0 .······························································· 4分
1 3 1 3
(Ⅱ)根据题意,分 2种情况讨论: 故 的取值范围是 , .··························································· 12分
2 2
若直线 l过原点,又由直线过点 P(3, 4),
19.解:(Ⅰ)记正项等比数列{an}的公比为 q 0,············································· 1分
4
则直线 l的方程为 y x,即 4x 3y 0;················································· 6分
3 因为 a1 a2 6, a1a2 a3,
若直线 l不过原点,设直线 l的方程为 x y a,
所以 (1 q)a1 6, qa
2
1 q
2a1,
又由直线 l过点 P(3, 4) ,则有3 4 a,解可得 a 7;
解得: a1 q 2,·················································································· 3分
即直线 l的方程为 x y 7 0;·································································9分
所以 a nn 2 ;························································································· 4分
综上所述:直线 l的方程为 x y 7 0或 4x 3y 0 .·······························10分
(Ⅱ)因为 bn 为各项非零的等差数列,所以 S2n 1 (2n 1)bn 1,
18.解:
又因为 S2n 1 bnbn 1,所以 bn 2n 1,························································ 6分
(Ⅰ)当 2时,圆C : x2 y2 4y 1 0,圆心C 0,-2 ,半径 r 5,········2分
{#{QQABaQgEgggAABIAAQhCAwmYCEOQkAEAAIoOQEAEIAAAiAFABAA=}#}
b 2n 1 (Ⅱ)解:因为 AB AD,PB 平面ABCD,所以以点 A为原点, AB、 AD所在直线为 x轴、n n ,··························································································7分an 2 y轴建立空间直角坐标系如图所示,则 A 0,0,0 ,D 0,2,0 , P 5,0,2 ,····· 6分
所以Tn 3
1 1
5 2 … (2n 1)
1
,
2 2 2n 所以 AD= 0,2,0 , AP= 5,0,2 .
1T 3 1 1n 2 5 3 (2n 1)
1
n (2n
1
1)
2 2 2 … 2 2
n 1
,········································ 9分 设面 PAD的法向量为 n x, y, z ,
1T 3 1 2( 1 1 1 1两式相减得: … ) (2n 1) ,
2 n 2 22 23 2n 2n 1 AD n 0
可得 ,
1 1 1 1 1 1 1
即 Tn 3 ( 2 3 … ) (2n 1)
AP n 0
2 2 2 2 2 2n 1 2n 1
,
T 3 1 1 1 1 1 1
2y 0
即 n 2 3 n 2 2n 1 即 ,取 n 2,0, 5 .························································· 8分 2 2 2 2 2 n 5x 2z 0
1 1
3 2
n 1 1 2n 5 4 2
1 2n 1 n 5 n . ···························································12分 因为在 Rt△ABC中 BC=1,AC=2, AB= 5 ,所以C , ,0 ,1 2 2 5 5
2
由(Ⅰ)知面 PBC 的法向量可取 AC= 4 2 , ,0 ,20. 5 5 ········································· 10分
(Ⅰ)证明:因为 PB 平面ABCD,所以 PB AB .
设平面 PBC与平面 PAD的夹角为 ,
在Rt PAB中,可知 AB= 32 22 5 . 8
n AC 4 5
在△ABC中,因为 BC=1,AC=2,所以 AC 2 BC 2 AB2, 则 cos cos n, AC 5 .········································ 12分
n AC 9 4 15
所以 AC BC .·······················································································2分
又 PB 平面ABCD,所以 PB AC .
21.解:(Ⅰ)设事件 A为“第三局结束乙获胜”.
因为 PB BC B, PB,BC 平面PBC ,
1 2
所以 AC 平面PBC .···············································································4分 由题意知,乙每局获胜的概率为 ,不获胜的概率为 . ···································2分3 3
又 AC 平面PAC,故平面PAC 平面PBC .···········································5分 若第三局结束乙获胜,则乙第三局必定获胜,
按乙三局比赛结果排序总共有 2种情况:(胜,不胜,胜),(不胜,胜,胜)
P(A) 1 2 1 2 1 1 4故 . ··························································· 4分
3 3 3 3 3 3 27
{#{QQABaQgEgggAABIAAQhCAwmYCEOQkAEAAIoOQEAEIAAAiAFABAA=}#}
(Ⅱ)设事件 B为“甲获胜”. (Ⅱ)依题意,直线 l不垂直于 y轴,设直线 l的方程为 x ty 1,P x1,y1 ,Q x2,y2 ,
1 1 1
若第二局结束甲获胜,则甲两局连胜,此时的概率 P1 .····················· 5分2 2 4 x ty 1 2 2 2 2
若第三局结束甲获胜,则甲第三局必定获胜,按甲的比赛结果排序, 由 x y 消去 x整理得 3t 4 y 6ty 9 0,
1
4 3
总共有 2种情况:(胜,不胜,胜),(不胜,胜,胜),
1 1 1 1 1 1 1 6t 9
此时的概率 P2 . ····················································7分 y1 y2 ,y y 2 2 2 2 2 2 4 则 3t
2 4 1 2 3t 2 4 ,························································· 6分
若第四局结束甲以积分 2分获胜,则甲第四局必定获胜,前三局为 1胜 2平或 1胜 1平 1负,
按甲的比赛结果排序,总共有 9种情况:(胜,平,平,胜),(平,胜,平,胜),
于是△ APQ
1
的面积 S | AD || y1 y2 |
(平,平,胜,胜),(胜,平,负,胜),(胜,负,平,胜),(平,胜,负,胜), 2
3 2
(负,胜,平,胜),(平,负,胜,胜),(负,平,胜,胜), y1 y2 4y2 1y2
P 1 1 1 1 3 1 1 1 1 5此时的概率 3 6 . ································ 10分 3 6t 362 6 6 2 2 6 3 2 48 ( )2
2 3t 2 4 3t 2 4
若第四局结束甲以积分 1分获胜,则乙的积分为 0分,按甲的比赛结果排序,总共有 4种情况:
2
(胜,平,平,平),(平,胜,平,平),(平,平,胜,平),(平,平,平,胜), 18 1 t 18 2 1 ,····················· 8分
P 1 1 1 1 1
3t 4 3 1 t 2
此时的概率 4 4 . ······················································· 11分 22 6 6 6 108 1 t
P(B) P P P P 265 1故 1 2 3 4 . ······························································· 12分 令u 1 t
2 1,因为函数 y 3u 在[1, )上单调递增,
432 u
1 2 1
22.解:(Ⅰ)由题可知,a =2. ······································································· 1 所以3u 4,即3 1 t 4,················································ 10分分 u 1 t 2
1 9
当直线 l的斜率不存在时,由|PQ|=3,得 + =1,则b22 =3,·····················3分4 4b 从而0 18 9
3 1 t 2 1
,(当且仅当 t 0时取等号)
x2
2
y2
故椭圆 C的方程为 + =1····································································4分 1 t 2
4 3
APQ 9 故 面积的取值范围为 0, .························································ 12分 2
{#{QQABaQgEgggAABIAAQhCAwmYCEOQkAEAAIoOQEAEIAAAiAFABAA=}#}