数学必修4(45分钟课时作业与单元测试卷):习题课(一) Word版含解析

数学必修4(45分钟课时作业与单元测试卷):习题课(一) Word版含解析
数学必修4(45分钟课时作业与单元测试卷):习题课(一) Word版含解析

习题课(一)

一、选择题

1.已知角α、β的终边相同,那么α-β的终边在( )

A .x 轴的正半轴上

B .y 轴的正半轴上

C .x 轴的负半轴上

D .y 轴的负半轴上

答案:A

解析:∵角α、β终边相同,∴α=k ·360°+β,k ∈Z .

作差α-β=k ·360°+β-β=k ·360°,k ∈Z ,

∴α-β的终边在x 轴的正半轴上.

2.在半径为10的圆中,4π3

的圆心角所对弧长是( ) A.403π B.203

π C.2003π D .4003

π 答案:A

解析:所求的弧长l =43π×10=403

π. 3.已知tan130°=k ,则sin50°的值为( ) A .-k 1+k 2 B.k 1+k 2

C.1+k 2k D .-1+k 2

k

答案:A

解析:k =tan130°=-tan50°,∴tan50°=-k >0,∴cos50°=-1k sin50°.又sin 250°+cos 250°=1,∴sin 250°=k 2k 2+1.∵k <0,sin50°>0,∴sin50°=-k 1+k

2. 4.已知cos ????3π2+σ=-35,且σ是第四象限角,则cos(-3π+σ)=( ) A.45 B .-45 C .±45 D.35

答案:B

解析:∵cos ????3π2+σ=sin σ=-35

,且σ是第四象限角, ∴cos σ=45,∴cos(-3π+σ)=-cos σ=-45

. 5.如果角θ满足sin θ+cos θ=2,那么tan θ+1tan θ

的值是( ) A .-1 B .-2

C .1

D .2

答案:D 解析:由sin θ+cos θ=2,得sin θcos θ=12

. 故tan θ+1tan θ=sin θcos θ+cos θsin θ=sin 2θ+cos 2θsin θcos θ=1sin θcos θ

=2.

6.已知n 为整数,化简

sin (n π+α)cos (n π+α)

所得结果是( ) A .tan(nα) B .-tan(nα)

C .tan α

D .-tan α

答案:C 解析:若n =2k (k ∈Z ),则

sin (n π+α)cos (n π+α)=sin (2k π+α)cos (2k π+α)=sin αcos α=tan α;若n =2k +1(k ∈Z ),则sin (n π+α)cos (n π+α)=sin (2k π+π+α)cos (2k π+π+α)=sin (π+α)cos (π+α)=-sin α-cos α

=tan α. 二、填空题

7.如果cos α=15

,且α是第四象限角,那么cos ????α+π2=________. 答案:265

解析:∵α是第四象限角,且cos α=15,∴sin α=-1-cos 2α=-265

,∴cos ????α+π2=-sin α=265

. 8.sin 21°+sin 22°+sin 23°+…+sin 288°+sin 289°+sin 290°的值为________.

答案:912

解析:∵sin 21°+sin 289°=sin 21°+cos 21°=1,

sin 22°+sin 288°=sin 22°+cos 22°=1,

sin 2x °+sin 2(90°-x °)=sin 2x °+cos 2x °=1(1≤x ≤44,x ∈N ),

∴原式=(sin 21°+sin 289°)+(sin 22°+sin 288°)+…+(sin 244°+sin 246°)+sin 290°+sin 245°

=45+????222=912. 9.设α是第二象限角,且cos α2=-1-cos 2????π-α2,则α2是第________象限角. 答案:三

解析:∵cos α2=-1-cos 2? ????π-α2 =-1-sin 2α2=-|cos α2|.∴cos α2≤0.又∵α是第二象限角,∴α2是第一或第三象限角.故α2是第三象限角.

三、解答题

10.已知sin ????-π2-α·cos ????-5π2-α=60169,且π4<α<π2

,求sin α与cos α的值. 解析:∵sin ???

?-π2-α=-cos α, cos ????-5π2-α=cos ???

?2π+π2+α=-sin α, ∴sin α·cos α=60169,即2sin α·cos α=120169

.① 又sin 2α+cos 2α=1,②

∴由①+②,得(sin α+cos α)2=289169

由②-①,得(sin α-cos α)2=49169

, 又α∈????π4,π2,∴sin α>cos α>0,

即sin α+cos α>0,sin α-cos α>0,

∴sin α+cos α=1713

,③ sin α-cos α=713

,④ 由③+④,得sin α=1213,由③-④,得cos α=513

. 11.化简:(1)cos36°-1-cos 236°1-2sin36°cos36°

; (2)tan (3π-α)sin (π-α)sin ???

?32π-α+ sin (2π-α)cos ????α-72πsin ????32π+αcos (2π+α)

. 解:

(1)原式=

cos36°-sin 236°sin 236°+cos 236°-2sin36°cos36° =cos36°-sin36°(cos36°-sin36°)

2=cos36°-sin36°|cos36°-sin36°| =cos36°-sin36°cos36°-sin36°

=1; (2)∵tan(3π-α)=-tan α,sin(π-α)=sin α,

sin(2π-α)=-sin α,cos(2π+α)=cos α,

sin ????32π-α=-cos α,cos ????α-72π=cos ???

?72π-α =cos ????4π-π2-α=cos ???

?π2+α=-sin α, sin ???

?32π+α=-cos α, ∴原式=-tan αsin α(-cos α)+-sin α(-sin α)-cos α·cos α

=1cos 2α-sin 2αcos 2α=1-sin 2αcos 2α=cos 2αcos 2α

=1.

能力提升

12.若tan(5π+α)=m ,则sin (α-3π)+cos (π-α)sin (-α)-cos (π+α)

的值为( ) A.m +1m -1 B.m -1m +1

C .-1

D .1

答案:A

解析:∵sin (α-3π)+cos (π-α)sin (-α)-cos (π+α)

=sin (-4π+π+α)-cos α-sin α+cos α=sin (π+α)-cos α-sin α+cos α=-sin α-cos α-sin α+cos α=sin α+cos αsin α-cos α=tan α+1tan α-1. 又tan(5π+α)=m ,∴tan(π+α)=m ,tan α=m .

∴原式=m +1m -1

. 13.已知sin(3π-α)=2cos ????3π2+β,cos(π-α)=63

cos(π+β),且0<α<π,0<β<π,求sin α和cos β的值.

解:原式可化为sin α=2sin β①

cos α=63

cos β② 由①2+②2可得

1=23+43

sin 2β ∴sin 2β=14,cos 2β=34

又∵sin α=2sin β>0

∴sin β=12,cos β=±32

sin α=22

.

2020年高一数学必修一集合单元测试题

人教版必修一数学教学质量检测卷【一】 第 一 章 《 集 合 》 时 间:90分钟 满 分:150分 姓名: 成绩: 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 下列各项中,不可以组成集合的是( ) A 所有的正数 B 等于2的数 C 充分接近0的数 D 不等于0的偶数 2 下列四个集合中,是空集的是( ) A }33|{=+x x B },,|),{(22R y x x y y x ∈-= C }0|{2≤x x D },01|{2R x x x x ∈=+- 3 下列表示图形中的阴影部分的是( ) A ()()A C B C B ()()A B A C C ()()A B B C D ()A B C 4 若集合{},,M a b c =中的元素是△ABC 的三边长,则△ABC 一定不是( ) A 锐角三角形 B 直角三角形 C 钝角三角形 D 等腰三角形 5 若全集{}{}0,1,2,32U U C A ==且,则集合A 的真子集共有( ) A 3个 B 5个 C 7个 D 8个 6. 下列命题正确的有( ) (1)很小的实数可以构成集合; (2)集合{}1|2-=x y y 与集合(){}1|,2-=x y y x 是同一个集合;

(3)3611,,,,0.5242-这些数组成的集合有5个元素; (4)集合(){}R y x xy y x ∈≤,,0|,是指第二和第四象限内的点集 A 0个 B 1个 C 2个 D 3个 7. 若集合}1,1{-=A ,}1|{==mx x B ,且A B A =?,则m 的值为( ) A 1 B 1- C 1或1- D 1或1-或0 8 若集合{}{} 22(,)0,(,)0,,M x y x y N x y x y x R y R =+==+=∈∈,则有( ) A M N M = B M N N = C M N M = D M N =? 9. 方程组? ??=-=+91 22y x y x 的解集是( ) A ()5,4 B ()4,5- C (){}4,5- D (){}4,5- 10. 下列表述中错误的是( ) A 若A B A B A =? 则, B 若B A B B A ?=,则 C )(B A A )(B A D ()()()B C A C B A C U U U = 11.若集合1{|,},{|,},{|,}22 n P x x n n Z Q x x n Z S x x n n Z ==∈==∈==+∈,则下列各项中正确的是( )A . Q P ≠? B .Q S ≠? C . Q P S = D .Q P S = 12.已知集合M={x|x 1},N={x|x>}a ≤-,若M N ≠?,则有( ) A .1a <- B .1a >- C . 1a ≤- D .1a ≥- 二、填空题:本大题共5小题,每小题5分,共20分。 13 设{}{} 34|,|,<>=≤≤==x x x A C b x a x A R U U 或,则______,==b a 14.已知{15},{4}A x x x B x a x a =<->=≤<+或,若A ?≠B,则实数a 的取值范围是 . 15. 某班有学生55人,其中体育爱好者43人,音乐爱好者34人,还有4人既不爱好体育也不爱

高一英语必修一第一单元测试卷

单元综合测评一 Unit 1Friendship (时间:100分钟满分:120分) 温馨提示:1.第Ⅰ卷答案写在答题卡上,第Ⅱ卷书写在试卷上;交卷前请核对班级、姓名、考号。2.本场考试时间为100分钟,注意把握好答题时间。3.认真审题,仔细作答,永远不要以粗心为借口原谅自己。 第Ⅰ卷选择题部分(共80分) 第一部分:英语知识运用(共两节,满分30分) 第一节:单项填空(共20 小题;每小题0.5分,满分10分) 从A、B、C和D四个选项中,选出可以填入空白处的最佳选项,并在答题纸上将该选项标号涂黑。 1.________ all the figures to see how much they ________. A.Add; add up to B.Add up; add up to C.Add up; add up D.Add; add to 解析:考查固定搭配。add up把……加起来;add up to加起来总共是。 答案:B 2.—What's the matter with Rod? —I think he's still ________ that we forgot his birthday. A.unfair B.stubborn C.reliable D.upset 解析:答句句意:我想他还在因为我们忘记了他的生日而不高兴。upset难过的,符合题意。 答案:D 3.—So you didn't say “hello” to him last night? —Well, I stopped and smiled when I saw him, but he ________ me and walked on. A.ignored B.refused C.denied D.missed 解析:考查动词辨析。ignore不理会;refuse拒绝;deny否定;miss错过,想念。 答案:A 4.Don't be nervous! Keep ________ even when you are in the face of danger. A.still B.calm C.silent D.quiet

人教A版数学必修一集合单元测试题

高中数学学习材料 (灿若寒星 精心整理制作) 集合单元测试题 一、选择题:(每小题5分,共计50分) 1.以下元素的全体不能够构成集合的是( ). A. 中国古代四大发明 B. 地球上的小河流 C. 方程 x 2 -1 = 0 的实数解 D. 周长为10cm 的三角形 2. 下列选项中集合之间的关系表示正确的是( ). A.φ∈{0} B.{0}?φ C.φ={0} D.φ={x ∈R ︱x 2+2=0} 3、如果集合{}8,7,6,5,4,3,2,1=U ,{}8,5,2=A ,{}7,5,3,1=B ,那么(A U )B 等于( ) (A){}5 (B) {}8,7,6,5,4,3,1 (C) {}8,2 (D) {}7,3,1 4. 已知集合{(,)|2},{(,)|4}M x y x y N x y x y =+==-=,那么集合M N 为( ) A 、3,1x y ==- B 、(3,1)- C 、{3,1}- D 、{(3,1)}- 5. 2{4,21,}A a a =--,B={5,1,9},a a --且{9}A B ?=,则a 的值是 ( ) A. 3a = B. 3a =- C. 3a =± D. 53a a ==±或 6. 设U =Z ,A ={1,3,5,7,9},B ={1,2,3,4,5},则图中阴影部分表示的集合是( ) A .{1,3,5} B .{1,2,3,4,5} C .{7,9} D .{2,4} 7.符合{}a ?≠{,,}P a b c ?的集合P 的个数是 ( ) A. 2 B. 3 C. 4 D. 5 8. 设集合P ={x |x =k 3+16,k ∈Z},Q ={x |x =k 6+13,k ∈Z},则( ) A .P =Q B .P ?Q C .Q ?P D .P ∩Q =φ 9. 集合2{4,,}A y y x x N y N ==-+∈∈的真子集的个数为 ( ) A. 9 B. 8 C. 7 D. 6 10. 2{60},{10}A x x x B x mx =+-==+=,且A B A ?=,则m 的取值范围是( ) A.11{,}32- B. 11{0,,}32-- C. 11{0,,}32- D. 11 {,}32

新课标人教A版高中数学必修4单元测试月考一)

浙江省亭旁中学高一数学(下)月考试卷 答案做在答题卷上 满分150分 时间120分 一、选择题(共10小题,每小题5分) 1.下面四个命题正确的是 ( ) (A). 第一象限角必是锐角 (B).小于90的角是锐角 (C).若cos 0α<,则α是第二或第三象限角 (D).锐角必是第一象限角 2.如果1 cos()2 A π+=-,那么sin()2A π+的值是 ( ) (A ).12- (B )12 (C )33 3.下列四式不能化简为AD 的是 ( ) A .;)++(BC CD A B B .);+)+(+(CM B C M B AD C .;-+BM A D M B D .;+-CD OA OC 4、如果点)cos 2,cos (sin θθθP 位于第三象限,那么角θ所在象限是( ) A、第一象限 B 、第二象限 C 、第三象限 D 、第四象限 5.为了得到函数sin(2)3 y x π =-的图像,只需把函数sin(2)6y x π =+的图像( ) (A )向左平移 4π个长度单位 (B )向右平移4π 个长度单位 (C )向左平移2π个长度单位 (D )向右平移2 π 个长度单位 6. 函数sin(3)4 y x π =- 的图象是中心对称图形,其中它的一个对称中心是 ( ) (A ) .,012π??- ??? (B ). 7,012π?? - ??? (C ). 7,012π?? ??? (D ). 11,012π?? ??? 7. 已知x 2sin )x (tan f =,则)1(-f 的值是( ) A 1 B 1- C 2 1 D 0 8.已知3sin 5m m θ-=+,524cos +-=m m θ,其中,2πθπ??∈???? ,则θtan 的值为( ) (A ).125- (B ). 125 (C). 12 5 - 或43- (D). 与m 的值有关

英语人教版必修一unit1-2单元测试

必修一Unit1-2 单元检测 一、单项选择(每小题1分,共计20分) 1. How much does that ? A.add B. add up C. add to D. add up to 2. get a good seat, he set out early after supper. A. In order to B. So that C. So as to D. In order that 3. Internet is becoming more and more popular. You to a library if you want to look up some information. A.don’t need go B. needn’t to go C. don’t nee d to go D. need go 4. This novel was concerned the Second World War, while most teenagers are more concerned _______ the hero’s love story. A.with ; for B. with ; with C. for ; about D. about ;with 5. He came here to discuss it with you. A.on purpose B. by chance C. for purpose D. on design 6. I won’t allow you to make the trip alone, even if you do it. A.dare B. dared C. daring D. dares to 7. The policeman asked with the old women. A. what the matter was B. what was the matter C. what matter was D. what was the wrong 8. During the war, he much pain. A.is suffered B. suffered C. was suffered D. was suffered from 9. She couldn’t her words by the students. A.get…understanding B. get…understood B.get… to understand D. make…understand 10. As the project at the meeting, it drew our attention. https://www.360docs.net/doc/6d4173965.html,es up B. was came up C. came up D. had been come up 11. it rains tomorrow, we’ll start out. A.If B. As if C. Even if D. Even 12. The project was so tough that workers didn’t complete it on time even the famous engineer’s direction. A.in B. under C. to D. with 13. The examination was very easy. , our monitor didn’t pass it. A.In other word s B. What’s more C. Believe it or not D. all the same 14. I wanted to send my present to my teacher, so I called on her. A.especial ; especially B. special; especially C. special; specially D. especially; specially 15. Last night Li Ping watched the football match at my home, so he in his office. A.needn’t have worked B. mustn’t haven’t worked C. shouldn’t have worked D. couldn’t have worked 16. Can you make sure _________ the gold ring? A. where Alice had put B. where had Alice put C. where Alice has put D. where has Alice put 17. Will you fetch me a ________ of today’s evening paper in a minute? A. series B. set C. couple D. copy 18. It was ________ late to catch a bus after the party; therefore er called a taxi. A. too very B. much too C. too much D. far 19. I was so excited as to ________ for the whole night. A. hold awake B. stay awake C. hold wake D. stay wake 20. We were going out for a walk ________ it began to rain. A. while B. before C. as D. when 二、完型填空(每小题1分,共计20分) People have always communicated with __21___ . In the past when they couldn’t write ,they used simple symbols ( 记号) to send their message . Some groups of North America Indians were experts __22__ messages . For example , a small stone on top of a large one meant “ This is the way .” If there was another small stone on the right , i t meant “ Turn right .” Some grass with a knot ( 结)meant “ Danger ”__23__ . Maybe you know that in the forests of Africa , it _24___ to travel from village . But drum ( 鼓) __25__ from many kilometers away . So , some groups of Africans made their drums __26____ like people . The Incas ( 印加人)of South America used to send messages by typing knots in a rope. Messages have been found , but __27___ can understand __28___ they mean . And the Egyptians used pictures as a kind of ___29__ but only _30____ people __31___ to understand them . Today , we also use __32___ . When we are in a car and we see a red light , we stop the car . When

高一数学必修一集合练习题及单元测试(含答案及解析)

题 习 集合练 1.设集合A={x|2 ≤x<4} ,B={x|3x -7≥8-2x} ,则A∪B 等于( ) A.{x|x ≥3} B.{x|x ≥2} C .{x|2 ≤x<3} D .{x|x ≥4} 2.已知集合A={1,3,5,7,9} ,B={0,3,6,9,12} ,则A∩B=( ) A.{3,5} B .{3,6} C .{3,7} D .{3,9} 3. 已知集合A={x|x>0} ,B={x| -1≤x≤2} ,则A∪B=( ) A.{x|x ≥-1} B .{x|x ≤2 } C .{x|00} ,T={x|3x -5<0} ,则S∩T=( ) A.? B .{x|x< -1/2} C .{x|x>5/3} D .{x| -1/2

新课标人教A版高中数学必修4单元测试第三章

[精练精析]单元质量评估(三)第三章:三角恒等变换一、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.函数y=sinx+cosx的最小正周期是() (A)(B)π(C)2π(D)4π 【解析】选C.∵y=sinx+cosx =2sin(x+), ∴T=2π. 2.(2009·长春高一检测)化简cos2(-α)-sin2( -α)得( ) (A)sin2α (B)-sin2α (C)cos2α (D)-cos2α 【解析】选A.原式=cos(-2α)=sin2α. 【解析】选A.sin89°cos14°-sin1°cos76°=sin89°cos14°-cos89°sin14° =sin75°=sin(45°+30°)= 6.(2009·平遥高一检测)若0<α<β<π4,sinα+cosα=a, sinβ+cosβ=b,则() (A)a>b (B)a2 19.(12分)求函数y=7-4sinxcosx+4cos2x-4cos4x的最大值和最小值 21.(12分)(2009·新余高一检测)已知函数f(x)=2sin2x+ sin x cosx+1,求: (1)f(x)的最小正周期; (2)f(x)的单调递增区间; (3)f(x)在[0, ]上的最值.

22.(12分)(2009·重庆高考)设函数f(x)=sin(x-) -2cos2x+1. (1)求f(x)的最小正周期; (2)若函数y=g(x)与y=f(x)的图象关于直线x=1对称,求当x∈[0, ]时,y=g(x)的最大值.

最新高一英语必修一Unit1单元测试题(含答案)

高一英语必修一Unit 1单元测试题 (满分100分) 姓名___________ 得分_____________ Ⅰ. 词语翻译:(40分,每小题2分) 1. 爱上____________________ 2. 经历,遭受____________________ 3. 与…相处,进展____________________ 4. 在黄昏时刻_____________________ 5. 故意_______________________ 6. 为了________________________ 7. 痊愈;恢复____________________ 8. 在户外________________________ 9. 对……厌烦_____________________ 10. 定居_________________________ 11. 不理睬______________________ 12. 提示,小费____________________ 13. 十几岁的青少年________________ 14. 感激的____________________ 15. a series of ___________________ 16. add up _______________________ 17. pack ( sth) up___________________ 18. no longer _______________________ 19. hide away ____________________ 20. calm down________________II.单词拼写, 用本单元中出现的词语填空:(15分,每小题1.5分) 1.The r_______ why she was ill was that she had eaten bad meat. 2.He gave me some a_______ on how to learn a foreign language. 3.The boy felt u________ because he didn’t do well in the exam. 4.N_________ is everything in the world and you can’t go against it. 5.You shouldn’t have hurt her f_______. 6.If you work hard, you can get good p________ in the exam. 7.I ________________(碰巧) to be reading upstairs when he came in. 8.To get as much information as possible, we should learn to _________(交流). 9.It’s ________ ( 正好,确切) twelve o’clock.. 10.Her husband has gone abroad on business. She is quite _________ (牵挂) about him.

高一数学必修一集合与函数单元测试题含答案

数学必修1第一章集合与函数测试题 一、选择题:在每小题给出的四个选项中,只有一项是符合题目要求的,请把正确答案的代号填在题后的括号 内(每小题5 分,共50分)。 1 ?用描述法表示一元二次方程的全体,应是 () 2 A. { x | ax+bx+c=O , a , b , c € R } B. { x | ax 2+bx+c=0, a , b , c € R ,且 a ^ 0} 2 C. { ax +bx+c=0 | a , b , c € R } D . { ax 2+bx+c=0 | a , b ,c € R ,且 a ^ 0} 2?图中阴影部分所表示的集合是() A. B n : C U (A U C): B.(A U B) U (B U C) C .(A U C) n (C U B ) D . :C U (A n C)]U B 3?设集合P= {立方后等于自身的数},那么集合 A . 3 B . 4 4 ?设P= {质数}, Q= {偶数},贝U P n Q 等于 A . ? B . 2 1 5?设函数y 的定义域为M ,值域为N , 1丄 x A . M= {x | X K 0}, N= {y | y 工 0} B. M= {x | x v 0且X K — 1,或 x > 0},N={y | y v 0,或0v y v 1,或 y > 1 } C. M= {x | X K 0},N= {y | y € R } D . M= {x | x v — 1,或—1 v x v 0,或 x > 0 =, N= {y | y K 0} 6?已知A 、B 两地相距150千米,某人开汽车以 60千米/小时的速度从 A 地到达B 地,在B 地停留1小时后再 以50千米/ 小时的速度返回 A 地,把汽车离开 A 地的距离x 表示为时间t (小时)的函数表达式是 () A . x=60t B . x=60t+50t 60t,(0 t 2.5) C . x= D . 150 50t, (t 3.5) 1 x 2 7?已知 g(x)=1-2x, f[g(x)]= 2 (x x A . 1 B . 3 p 的真子集个数是 () C . 7 D . 8 () C . { 2} D . N 那么 () 60t,(0 t 2.5) x= 150,(2.5 t 3.5) 150 50( t 3.5),(3.5 t 6.5) 1 0)则f(—)等于 () 2 C . 15 D . 30

最新人教版高中数学必修四单元测试题及答案全套

最新人教版高中数学必修四单元测试题及答案全套 阶段质量检测(一) (A 卷 学业水平达标) (时间:90分钟,满分:120分) 一、选择题(本大题共10小题,每小题5分,共50分) 1.在0°~360°的范围内,与-510°终边相同的角是( ) A .330° B .210° C .150° D .30° 答案:B 2.若-π 2<α<0,则点P (tan α,cos α)位于( ) A .第一象限 B .第二象限 C .第三象限 D .第四象限 答案:B 3.已知角α的始边与x 轴的非负半轴重合,终边过点P (sin 120°,cos 120°),则α可以是( ) A .60° B .330° C .150° D .120° 答案:B 4.若sin 2θ+2cos θ=-2,则cos θ=( ) A .1 B.12 C .-12 D .-1 答案:D 5.函数f (x )=tan ????x +π 4的单调增区间为( ) A.? ???k π-π2,k π+π 2,k ∈Z B .(k π,(k +1)π),k ∈Z C.? ???k π-3π4,k π+π 4,k ∈Z D.????k π-π4,k π+3π 4,k ∈Z 答案:C 6.已知sin ????π4+α=3 2,则sin ????3π4-α的值为( ) A.1 2 B .-1 2

C. 32 D .- 32 答案:C 7.函数y =cos 2x +sin x ????-π6≤x ≤π 6的最大值与最小值之和为( ) A.3 2 B .2 C .0 D.3 4 答案:A 8.如图是函数y =A sin(ωx +φ)(x ∈R)在区间????-π6,5π 6上的图象,为了得到这个函数的图象,只要将y =sin x (x ∈R)的图象上所有的点 ( ) A .向左平移π 3个单位长度,再把所得各点的横坐标缩短到原 来的1 2 倍,纵 坐标不变 B .向左平移π 3个单位长度,再把所得各点的横坐标伸长到原来的2倍,纵坐标不变 C .向左平移π6个单位长度,再把所得各点的横坐标缩短到原来的1 2倍,纵坐标不变 D .向左平移π 6个单位长度,再把所得各点的横坐标伸长到原来的2倍,纵坐标不变 答案:A 9.已知函数y =A sin(ωx +φ)(A >0,ω>0,|φ|<π)的一段图象如图所示,则函数的解析式为( ) A .y =2sin ? ???2x -π4 B .y =2sin ????2x -π4或y =2sin ????2x +3π4 C .y =2sin ????2x +3π4 D .y =2sin ????2x -3π4 答案:C 10.函数f (x )=A sin ωx (ω>0),对任意x 有f ????x -12=f ????x +12,且f ????-14=-a ,那么f ????9 4等于( ) A .a B .2a C .3a D .4a 答案:A 二、填空题(本大题共4小题,每小题5分,共20分) 11.已知sin(π-α)=-2 3,且α∈????-π2,0,则tan(2π-α)=________. 解析:sin(π-α)=sin α=-2 3 ,

【单元测试卷】新人教版 高中英语 必修一 Unit 1 单元测试(基础

新人教版 高中英语 必修一 Unit 1 Teenage Life 单元测试 (基础卷) 一、根据汉语提示写出正确的单词 1. She now helps in a local school as a __________(志愿者) three days a week. 2. There has been a lot of ________(辩论)among scholars about this. 3. The new government's first ________ (挑战)is the economy. 4. I ________(较喜欢) to think of peace not war. 5. Do you have some ideas about this ________(标题)? 6. I just spent a holiday there and would ________(推荐)it to anyone. 7. You may be charged 10% ________ (额外的)for this service. 8. I think my dad should ________ (戒掉)smoking. 9. Life should be an __________ (冒险). 10. They arrived in New York two days ahead of __________(日程安排). 二、用所给单词的正确形式填空 1. I could feel __________(move ) in the dark all around me. 2. The course is suitable for beginners and __________ (advance )students. 3. It is our _________(responsible )to take care of the old. 4. We invited readers who completed the puzzle to send in their __________(solve ). 5. I have no excuse for my ___________(behave ). 6. But how do you know when you or someone you love is ________(addict ) to the Internet? 7. They __________(obvious )love you very much. 8. He was nice looking, but I wasn't deeply __________(attract )to him. 9. In my _________(young ),my dream was to be an inventor. 10. Do you consider her __________(suit ) for the job? 三、选择合适的短语, 并用其正确形式, 完成句子 1. Can I ___________ this course in advance ? 2. More people_______________ cycling when the weather is fine.

高一数学必修一集合练习题及单元测试(含答案及解析)

集合练习题 1 .设集合A = {x| 2 4}, B = {x|3x —7 >8 —2x},贝U A UB 等于() A. {x|x > 3} B. {x|x > 2} C. {x|2 4} 2 .已知集合A = {1,3,5,7,9} , B= {0,3,6,9,12},贝U A AB =( ) A. {3,5} B. {3,6} C. {3,7} D. {3,9} 3. 已知集合A = {x|x>0} , B= {x| —1 w x w 2}则A UB =( ) A. {x|x —1} B. {x|x w 2 } C. {x|00} , T = {x|3x —5<0},贝U S AT=( ) A . ? B . {x|x< —1/2} C . {x|x>5/3} D . {x| —1/2 a}且A UB = R,则实数a的取值范围是_________________ . 10.已知集合A = {—4,2a —1,白}, B= {a —5,1 —a,9},若A AB = {9},求a 的值.

人教A版高中数学必修四必修四第一章《三角函数》单元测试题

高中数学学习材料 (灿若寒星 精心整理制作) 2017年高中数学必修四第一章《三角函数》单元测试题 一、 选择题(本大题共12小题,每小题3分,共36分,在每小题给出的四个选项中,只有一个是符合要求的,把正确答案的代号填在括号内.) 1、 600sin 的值是( ) )(A ;21 )(B ;23 )(C ;23- )(D ; 21- 2、下列说法中正确的是( ) A .第一象限角都是锐角 B .三角形的内角必是第一、二象限的角 C .不相等的角终边一定不相同 D .},90180|{},90360|{Z k k Z k k ∈?+??==∈?±??=ββαα 3、已知cos θ=cos30°,则θ等于( ) A. 30° B. k ·360°+30°(k ∈Z) C. k ·360°±30°(k ∈Z) D. k ·180°+30°(k ∈Z) 4、若θθθ则角且,02sin ,0cos <>的终边所在象限是( ) A .第一象限 B .第二象限 C .第三象限 D .第四象限( ) 5、已知21 tan -=α,则α ααα22cos sin cos sin 2-的值是( ) A .3 4 - B .3 C .34 D .3- 6.若函数x y 2sin =的图象向左平移4π 个单位得到)(x f y =的图象,则( ) A .x x f 2cos )(= B .x x f 2sin )(= C .x x f 2cos )(-= D .x x f 2sin )(-=

7、9.若?++?90cos()180sin(αa -=+)α,则)360sin(2)270cos(αα-?+-?的值是( ) A .32a - B .23a - C .32a D .2 3a 8、圆弧长度等于圆内接正三角形的边长,则其圆心角弧度数为 ( ) A . 3 π B. 3 2π C. 3 D. 2 9、若x x f 2cos 3)(sin -=,则)(cos x f 等于( ) A .x 2cos 3- B .x 2sin 3- C .x 2cos 3+ D .x 2sin 3+ 10、已知tan(α+β)=2 5,tan(α+4π)=322, 那么tan(β-4π)的值是( ) A .15 B .1 4 C .1318 D .1322 11已知函数>><+=ω?ω,0)sin()(A x A x f )2 ||,0π ?< 在一个周期内的图象如图 所示.若方程m x f =)(在区间],0[π上有两个不同的实数解21,x x ,则21x x +的值为( ) A . 3π B .π32 C .π34 D .3π或π3 4 12.已知函数f (x )=f (π-x ),且当)2 ,2(π π-∈x 时,f (x )=x +sin x ,设a =f (1),b =f (2),c =f (3),则( ) A.a

五年级下册 数学作业

五年级数学作业 姓名: 一、填空: 1、长方体和正方体都有( )个面,( )条棱,( )个顶点。 2、长方体的长是8厘米,宽是6厘米,高是5厘米,它的棱长和是( ) 厘米;六个面中最大的一个面积是( ) 平方厘米,表面积是( )平方厘米。 3、2850平方厘米=( )平方分米( )平方厘米 12.8米=( )分米=( )厘米 4、一个棱长是1分米的正方体,锯成2个小长方体,其中一个长方体的表面积是( )平方分米。 5、一个正方体的棱长为a 厘米,它的棱长和是( )厘米,表面积是( )平方厘米 6、用棱长1厘米的小正方体拼成一个棱长1分米的大正方体,需要( )个小正方体,把这些小正方体排成一排,长( )米。 7、平角的21 是( )度,是( )角。 8、一段公路每天修全长的121 ,4天修全长的( )。 9、七折指现价是原价的( ),一套原价75元的书,现八折出售,每套( )元。 10、正方形的边长34 米,它的周长是( )米,面积是( )平方米。 11、在“女生占全班人数的59 ”这一数学信息中,( )是“一个整 体”,写出求女生人数的数量关系式是:( )×59 =女生人数。 12、一根铁丝长58 米,截去14 ,还剩下( )( ) ;若截去14 米,还剩下( )米。 13、 1吨的58 等于( )吨的18 。 二、火眼金睛 1、将一个长方体切成两个相等的正方体,每个正方体的表面积是长方 体表面积的一半。( ) 2、有一组相对的面是正方体的长方体,其他四个面的面积相等。( ) 3、把一个长方体的长、宽、高都扩大2倍,表面积也扩大2倍。( ) 4、2个长方体表面积相等,棱长之和也一定相等。( ) 5.一件商品打六折是指现价是原价的106 。( ) 计算 109-53 134 - 51 117+158 1-198 158-3 2

【单元试卷】新外研版高中英语必修一-Unit-1-A-new-start-单元测试及答案

新外研版高中英语必修一 Unit 1 A new start单元测试 一、根据汉语提示写出正确的单词 1.Our __________(校园)reaches down to the South Lake. 2.We can’t start the car because there’s something wrong with the __________ (发动机). 3.I don’t think __________(羽毛球)is a popular sport in America. 4.__________(组织)a successful meeting demands a lot of work. 5.My younger brother will __________(毕业)from junior high school in 2021. 6.( 7.Nancy takes part in all kinds of __________(志愿者)work on weekends. 8.Mr. Smith asks his daughter to set a __________(具体的)goal for her career. 9.I’m going to call on one of my __________(从前的)classmates. 10.If you want to do the job well, you have to learn __________(各种各样的)skills. 11.The Green took the children to the zoo and watched a __________(海豚)show. 二、用所给单词的正确形式填空 1.Jack stood by the lake __________ (breathe) deeply and evenly. 2.The government has built more and more fitness __________ (facility) in these neighbourhood.

相关文档
最新文档