高一13周周考试卷
高一上学期数学周练13答案

高一上学期数学周练13一、选择题.请把答案直接填涂在答题卡相应位置上......... 1.已知函数()f x 的定义域为[]-2,2,则函数()()3g x f x = ( D )A .2,13⎡⎤⎢⎥⎣⎦B .[]1,1-C .123,⎡⎤-⎢⎥⎣⎦D .22,33⎡⎤-⎢⎥⎣⎦2.设⎭⎬⎫⎩⎨⎧-∈3,21,1,1α,则使函数αx y =的定义域为R 且为奇函数的所有的α的值为 ( A )A.1,3B.-1,1C.-1,3D.-1,1,3 3.若幂函数()()22433m f x m m x -=--在()0,+∞上为减函数,则实数m =( B )A.41m m ==-或B.1m =-C. 21m m ==-或D. 4m =4.已知ba cb a ==⎪⎭⎫ ⎝⎛=,2.0log ,31312.0,则c b a 、、的大小关系为( B )A 、c b a <<B 、b a c <<C 、b c a <<D 、a c b <<5.已知函数()()log 4(0a f x ax a =->且1a ≠)在[]0,2上单调递减,则a 的取值范围是 ( B ) A .()0,1 B .()1,2 C .()0,2 D .[)2,+∞6.已知函数()()()()21,11log ,013aa x x f x x x ⎧->⎪=⎨-<≤⎪⎩,当1>0x ,20x >,且12x x ≠时,()()12120f x f x x x -<-,则实数a 的取值范围是 ( C )A .10,2⎛⎫ ⎪⎝⎭B .11,32⎡⎫⎪⎢⎣⎭C .10,3⎛⎤ ⎥⎝⎦D .1,3⎛⎤-∞ ⎥⎝⎦ 7.函数()ln 1f x x =-的图象大致是 ( B )A .B .C .D .8.已知函数()3122xxf x x =+-,若()()2120f a f a -+≤,则实数a 的取值范围为 ( D )春雨教育A. (]1,1,2⎡⎫-∞-+∞⎪⎢⎣⎭B. 1,12⎡⎤-⎢⎥⎣⎦ C. [)1,1,2⎛⎤-∞-+∞ ⎥⎝⎦ D.11,2⎡⎤-⎢⎥⎣⎦二、多选题:(每小题给出的四个选项中,不止一项是符合题目要求的,请把正确的所有选项填涂在答题卡相应的位置上)9.(多选)下列各式比较大小,正确的是 ( BC )A .1.72.5>1.73 B .24331()22-> C .1.70.3>0.93.1D .233423()()34>10.(多选)若,,()()(y)x y R f x y f x f ∀∈+=+有,则函数()f x 满足 ( ACD )A. (0)0f = B.为偶函数()f x C.()f x 为奇函数 D.(2020)2020(1)f f = 11.(多选)下列说法正确的是 ( ABD )A .函数()24f x x x =-在区间()2,+?上单调递增B .函数()24xxf x e -=在区间()2,+?上单调递增C .函数()()2ln 4f x x x =-在区间()2,+?上单调递增D .若函数()()1f x x ax =-在区间()0,+?上单调递增,则0a ≤12.高斯是德国著名的数学家,近代数学奠基者之一,享有“数学王子”的称号,他和阿基米德、牛顿并列为世界三大数学家,用其名字命名的“高斯函数“为:设x ∈R ,用[]x 表示不超过x 的最大整数,则[]y x =称为高斯函数,例如:[ 3.5]4-=-,[2.1]2=.已知函数1()12=-+x xe f x e ,则关于函数()[()]g x f x =的叙述中正确的是 ( BC )A.()g x 是偶函数 B.()f x 是奇函数C.()f x 在R 上是增函数D.()g x 的值域是{}1,0,1-【解析】选BC ()()()111[012e g f e ==-=+,1111(1)[(1)][[]112121e g f e e-=-=-=-=-++,()()11g g ∴≠-,则()g x 不是偶函数,故A 错误; 1()12=-+x x e f x e 的定义域为R , 111()()11121211xxx x x x x x e e e e f x f x e e e e---+=-+-=+-++++11011x x xe e e=+-=++,()f x ∴为奇函数,故B 正确; 111111()121221x x x xxe ef x e e e +-=-=-=-+++, 又x e 在R 上单调递增,11()21xf x e ∴=-+在R 上是增函数,故C 正确;春雨教育0x e > ,11x e ∴+>,则1011x e <<+,可得11112212x e -<-<+,即11()22f x -<<. ()[()]{1g x f x ∴=∈-,0},故D 错误.故选BC.三、填空题.请把答案直接填写在答题卡相应位置上......... 13.已知定义在R 上的奇函数,当0x <时有3()2x f x x =-+,则()f x =____332,00,02,0x x x x x x x -⎧+>⎪=⎨⎪-+<⎩_____14.若关于x 的函数12(log )x y a =是R 上的减函数,则实数a 的取值范围是1(,1)2. 15.设函数2()log )f x x =,若对任意的(1,)x ∈-+∞,不等式(ln )(24)0f x a f x -++<恒成立,则a 的取值范围是___(0,]e ____.16.设函数()()()2,142,1x a x f x x a x a x ⎧-<⎪=⎨--≥⎪⎩. ①若1a =,则()f x 的最小值为____1-___;②若()f x 恰有2个零点,则实数a 的取值范围是___[)1,12,2⎡⎫+∞⎪⎢⎣⎭____.四、解答题.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.17. 设函数()()⎪⎭⎫ ⎝⎛⋅=4log 8log 22x x x f ,144x ≤≤,(1)求⎪⎭⎫⎝⎛41f 的值(2)若2log t x =,求t 取值范围;(3)求()f x 的最值,并给出最值时对应的x 的值。
政治周考参考答案(13周)

政治周考参考答案(13周)1---5ACCCA 6----10CABDC 11---12AC[答案]13.①人们的文化素养,是通过对社会生活的体验,特别是通过参与文化活动、接受文化知识教育而逐步培养出来的。
读书是人们接受文化知识教育的重要方式,爱读书能提高整个民族文化素养。
(3分)②文化作为一种精神力量,能够在人们认识世界、改造世界过程中转化为物质力量,对社会发展产生深刻的影响。
爱读书作为一种精神力量,会推动民族的发展。
(3分)③文化与经济政治相互影响(或文化反作用经济、政治),先进的、健康的文化促进社会发展。
爱读书是一种优秀的文化,必然推动社会发展。
(3分)④文化是综合国力的重要因素。
爱读书会增强民族凝聚力和创造力。
(3分)14.(1)文化作为一种精神力量,能够在人们认识世界、改造世界的过程中转化为物质力量,对社会发展产生深刻的影响。
“好客山东休闲汇”活动的举办,将对社会产生深刻影响。
(3分)(2)文化与经济相互影响、相互交融,文化生产力在现代经济总体格局中的作用越来越突出。
“休闲汇”一系列优惠让利和特色活动,极大刺激了当地休闲消费热情,带来了全省旅游和消费总额的大幅增长。
(3分)(3)文化对人的影响来自于特定的文化环境和各种形式的文化活动,《国民休闲发展纲要》的实施规划,将从基础设施建设、开放公共休闲资源、举办重大休闲文化活动等方面入手,为进一步推动国民休闲发展创造良好的环境。
(3分)(4)优秀文化能够丰富人的精神世界,增强精神力量,促进人的全面发展。
“好客山东休闲汇”活动的举办,丰富了居民的经济、文化生活,满足居民休闲需求,全面推进国民休闲发展。
(3分)15.(1)①文化多样性是人类社会的基本特征,是人类文明进步的重要动力。
②尊重文化多样性是发展本民族文化的内在要求,也是实现世界文化繁荣的必然要求。
③文化是民族的,各民族都有自己的文化个性和特征;文化又是世界的,各民族文化都是世界文化中不可缺少的色彩。
信丰中学2019-2020学年高一上学期周考(3)地理试题含答案

江西省信丰中学2019-2020学年高一上学期周考(3)地理试题含答案2019—2020学年上学期(地理)周考(3)试题命题人:审题人:高一地理备课组考试时间:2019-12—12一、选择题(每小题3分,共75分)冰雾是我国大兴安岭地区的主要气象灾害,俗称“冒白烟”,在冬季,当近地面气温很低时,空气中的水汽凝华成微小冰晶而形成。
为减轻冰雾带来的灾害,当地因地制宜设计了高效日光温室,保证喜温作物越冬生产。
温室前屋面上覆盖材料包括透明薄膜和草苫等保温材料两层。
图1示意大兴安岭冰雾日变化。
图2示意该地日光温室景观。
据此完成下面小题。
1.一天中,冰雾高峰期出现在9时前后的原因不包括A.降温最快B.相对湿度大 C.气温最低D.静风2.在冰雾出现日,为增强日光温室的保温效果,当地农民掀起草苫的时间为A.9时前后B.正午前后C.日落前后D.子夜前后3.该日光温室前屋面的朝向是A.正南B.东南C.正北D.西南读“全球近地面气压带和风带局部示意图”(下图3),回答下面小题.图34.根据图中信息判断,下列说法正确的是A.受丙气压带影响,撒哈拉沙漠炎热少雨B.受甲风带移动影响,南亚地区夏季多雨C.受乙风带影响,西欧地区全年温和湿润D.受甲风带影响,澳大利亚北部形成雨季5.有关大气运动的叙述,正确的是A.大气的水平运动就是风 B.引起大气运动的原因是不同地区间气压差异C.水平气压梯度力是大气运动的根本原因 D.空气的升降运动是大气运动的最基本形式新疆的博斯腾湖是中国最大的内陆淡水湖,湖区内湖陆风现象较显著(湖陆风是在较大水域和陆地之间形成的以24小时为周期的地方性天气现象)。
图4为博斯腾湖区域图,读图回答下面小题。
图46.根据材料,说出博斯腾湖湖陆风最弱的季节A.湖陆风最弱的季节是春季B.湖陆风最弱的季节是夏季C.湖陆风最弱的季节是秋季D.湖陆风最弱的季节是冬季7.当在湖泊周边大规模兴建城市对湖陆风的影响描述正确的是A.湖风加强,陆风减弱B.湖风加强,陆风加强C.湖风减弱,陆风减弱D.湖风减弱,陆风增强幻日奇观是大气的一种光学现象,在天空出现的半透明薄云里面,有许多飘浮在空中的六角形柱状的冰晶体,偶尔它们会整整齐齐地排列在空中。
高一英语周测题(基础版,附答案)

高一英语周测题(基础班,附答案)1.__________ (walk) after supper is good for your health. (Walking)2.She was unable to sleep well because of the _________(press) of work. (pressure)3.As one of the family ___________(member),you should help out around the house. (members)4.With the ____________(develop) of the Internet,smart-phones are widely used. (development)5. He went to the park instead of ( see) a movie last weekend. (seeing)6. I have already finished _______(read)it. (reading)7. We found some _______ (mark) on the sand. (marks)8.I have lost my food, drink, tools and ______ (gun). (guns)9.He is a_______ man, his parents are proud of his______.(success) (successful success)10.The house ________(belong) to his son. (belongs)11.John __________ (collect)stamps for two years. (has collected)12.We __________ (skate) next week. (will skate/ are going to skate)13.There are four great __________ (invent)in China. (inventions)14.We all hope we can have a __________(peace)world. (peaceful)15. At the ____ (begin) of the concert, he ____ (begin) to feel nervous. (beginning began)16. It rained ____ (heavy) last night. (heavily)They didn’t go out because of the ____ (heavy) snow. (heavy)17. What were you doing when the rainstorm ____ (sudden) came?(suddenly)18. We finished the rest of the dinner in ____ (沉默). (silence)19. All the cars have to stop on the road because of a ____ (fall) tree. (fallen)20.As soon as he saw me, he stopped _______(talk)to me. (to talk)21.It is said that there is no _______ (live) things on the moon. (living)22. He tried ______ (climb) the mountain, but he failed. (to climb)23. Do you find a good way _______ (solve) the problem? (to solve)24. If you keep ______(practice) like that, you will win the race. (practicing)25. This kind of potato (weigh) three kilos. (weighs)26.We want to do a (调查)about resolutions. (research)27.Are there (野生的)animals in the mountainside?(wild)28.There is a (巨大的)stone on the road. (huge)29.To complete the work,he drank some coffee to keep himself (醒着的)(awake)30.The teacher is coming. Would you mind (clean) the blackboard?(cleaning)Rock climbing(攀岩)did not become a sport until late in the 1900s. But now it has become a popular outdoor activity. While rock climbingmay still be necessary for mountain climbing, most people just climb low mountains for fun. If you have ever done rock climbing, you will know that it is not a very easy sport. Indoor and outdoor rock climbing both need practice. What most people don’t know is that rock climbing is one of the sports that depend on your body and mind(意志). To climb successfully, one must use wonderful skills. One of the important rules is to always have three parts of your body on the rock face. Another important rule is that your arms only hold you close to the rock face while your legs are pushing you up, the closer you are to the rock face, the easier it is to climb.Rock climbing is a wonderful sport. Once you start to learn how to climb, you’ll find more fun. People who like games such as chess playing or problem-solving may love rock climbing, because they are nearly the same in the way of thinking. For anyone who wants to get into beautiful shape, rock climbing is a fun and good way. Anyone who enjoys a difficult game and loves the outdoors should think of taking rock climbing as a new hobby.( )31. When did rock climbing become a sport?A.In 1900.B. Early in the 1900s.C. In the middle of the 1900s.D. Late in the 1900s.( )32. Who should think of taking rock climbing as a new hobby?A.People who enjoy indoor activities.B.People who enjoy music.C.People who love dancing.D.People who enjoy a difficult game and love the outdoors. ( )33. What does rock climbing depend on?A.It depends on your brain.B.B. It depends on your hobby.C.It depends on your interests.D.It depends on your body and mind.( )34. What can we learn from the passage?A. Rock climbing is a kind of indoor and outdoor activity.B. Rock climbing is a very easy sport.C. When you climb, your arms push you up.D. The closer you are to the rock face, the more difficult it is to climb.阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。
安徽省舒城中学2021-2022学年高一上学期第一次周考英语试卷 Word版缺答案

舒城中学新课程自主学习系列训练(一)高一英语2021.09.16命题:审校:(考试时间120分钟,满分150分)第一卷(100分)第一部分:完形填空(共20题;每小题1.5分,满分30分)。
阅读下面短文,从每小题所给的A、B、C、D四个选项中选出最佳选项。
One sunny afternoon, a seven-year-old girl went for a walk. She crossed aLargearea of grassland into the woods1she realized that she was lost.Sitting on a rock and2what to do, she began crying. After a while,she 3 to walk along a wide path lined with tall trees and thick bushes. 4 it was getting dark, she saw a small, dark wooden house. She opened thedoor and 5 stepped in. Suddenly, she heard a strange noise, and she ran outthe door and back to the 6 cold and tired, she fell asleep near a 7 The girl’s parents were outand her dog, Laddy, was at home. Laddy8 that his mistress (女仆人)was in danger. He jumped 9 a window, breakingthe glass. He looked in the fields. Buthecouldn’t find his mistress anywhere.However, from the ground came a10scent (气味) as he lowered his head. He11the scent and walked across the grassland. Barking12 into the air, thedog13 through the woods until he found the14But the girl was notthere, so he headed back to the woods. Much to his15 he saw his mistress’blue shirt in the distance. He1 6 over some bushes and saw the little stream,where the girl was17 .When she opened her eyes and18 her dog standing beside her, the girl said,“You19 me, Laddy,” and she kissed him several times. Seeing their daughterand dog coming back, the parents burst into tears of 2 0 .That night Lad dy had ahero’s supper: a huge meal of steak.1.A. before B. since C. while D. as2.A. wondering B. forgetting C. remembering D. regretting3.A. preferred B. expected C. failed D. decided4.A. When B. Until C. If D. Because5.A. carelessly B. carefully C. hopelessly D. unwillingly6.A. trees B. bushes C. woods D. grasses7.A. stream B. rock C. tree D. house8.A. found B. sensed C. heard D. smelt9.A. at B. through C. in D. onto10.A. terrible B. strange C. pleasant D. familiar11.A. missed B. discovered C.followed D.ignored12.A. calmly B. loudly C. merrily D. gently13.A. searched B. wandered C. looked D. travelled14.A. window B. girl C. house D. hero15.A. satisfaction B. disappointment C. embarrassment D. delight16.A. jumped B. climbed C. walked D. flew17.A. awake B. abandoned C. Available D. asleep18.A. spotted B. watched C. observed D. saw 19.A. disturbed B. comforted C. saved D. scared20.A. pain B. shock C. sorrow D. relief其次部分:阅读理解(共两节,满分40分)第一节阅读下列短文,从每小题所给的A、B、C、D四个选项中选出最佳选项。
四川省泸州市古蔺县金兰高级中学校2022-2023学年高一上学期第一次周考物理试卷

金兰高级中学校2022级高一上期第一次周考物理试卷一、选择题(每题6分,共计48分)1、2021年7月23日至8月8日奥运会在东京举行.在下列奥运会的比赛项目中,评判比赛成绩时,运动员可视为质点的是( )2、关于位移和路程,下列说法正确的是()A. 在某段时间内物体运动的位移为零,该物体不一定是静止的B. 在某段时间内物体运动的路程为零,该物体不一定是静止的C. 某同学沿着400m的环形操场跑了一圈,位移为400mD. 高速公路路牌标示“上海80km”涉及的是位移3、如图所示运动图象中,哪幅图说明物体在作匀速直线运动()4、运动员在百米赛跑中,6s末的速度为9.3m/s,10s末到达终点时的速度为15.5m/s,他跑全程的平均速度为()A.12.2m/s B.11.8m/s C.10m/s D.10.2m/s5、关于速度、速度的变化量、速度的变化率、加速度的关系.下列说法正确的是()A.物体加速度减小时,速度也一定减小B.物体速度变化越快,则加速度越大、速度变化量也越大C.物体速度变化越快,则速度的变化率越大,加速度也越大D.物体速度大小为0时,加速度也一定等于零6、某物体沿一直线运动,其速度﹣时间图象如图所示,则以下描述正确的是()A.第1s内和第2s内物体的速度方向相反B.第1 s内和第2 s内物体的加速度方向相反C.第2 s末物体的速度和加速度都为零D.第3 s内物体的速度方向和加速度方向相反7、(多选)物体做匀变速直线运动,某时刻速度的大小为4 m/s,2s后速度的大小变为10 m/s,在这2s内该物体的( )A.位移的大小一定是14 mB.位移的大小可能是6 mC.加速度的大小可能是3 m/s2D.加速度的大小可能大于7 m/s28、(多选)由静止开始做匀加速直线运动的火车,在第10 s末的速度为2 m/s,下列叙述中正确的是( )A.前10s内通过的位移10mB.每秒速度变化0.2m/sC.10s内平均速度为1m/sD.第10s内的位移为2m二、实验题(共计14分)9、(6分)打点计时器是一种使用交流电源的计时仪器,为减小实验误差,打点计时器应优先选用________(选填“电磁打点计时器”或“电火花计时器”,该计时器的工作电压为_____V,当电源频率为50Hz时,打印出纸带后,舍去前面比较密的点,从A点开始,每4个连续点取1个计数点,标以A、B、C…那么相邻两个计数点之间的时间间隔为_____s。
辽宁省抚顺一中2020-2021学年高一下学期4月第一次周测英语试卷 缺答案

2021年度高一下学期英语周测试题考试时间:120分钟命题人:高一英语组第一部分听力(共两节,满分30分)第一节(共5小题;每小题1.5分,满分7.5分)听下面5段对话。
每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项。
听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1. What time is it now probably?A. 8:30.B. 8:20.C. 8:00.2. Which of the following wasn't lost?A. Her purse.B. Her phone.C. Her keys.3. What does the woman want to do tonight?A. Watch a movie.B. Go to a concert.C. Go to bed early.4. Which fruit are the speakers talking about?A. Grapes.B. Apples.C. Bananas.5. What does the woman plan to do?A. Work on her composition. B Surf on the Internet.C. Chat with neighbors.第二节(共15小题;每小题1.5分,满分22. 5分)听下面5段对话或独白。
每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项。
听每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间每段对话或独白读两遍。
听下面一段对话,回答以下小题。
6. Where did the man just come back from?A. ItalyB. BrazilC. South Africa7. Why did the man go to China last year?A. To do volunteer work.B. To see his children.C. To do some sightseeing.听下面一段对话,回答以下小题。
高一数学必修一经典周考(测)卷及答案详解

2018至2109学年上学期高一年级(数学)周测试卷第7次学号: 班级: 姓名: 得分: (满分100分)一、选择题:(每小题 5 分,共60 分)1.设集合{}{}123234A B ==,,, ,,, 则=A B ( )A. {}123,4,,B. {}123,, C. {}234,, D. {}134,, 【答案】A1.【解析】由题意{1,2,3,4}A B =,故选A.2.=⋅⋅9log 4log 25log 522( )A.5B.6C.9D.82.答案:D3.函数y =x ln(1-x )的定义域为( )A .(0,1)B .[0,1)C .(0,1]D .[0,1]解析:根据题意得⎩⎪⎨⎪⎧1-x >0x ≥0,解得0≤x <1,即所求定义域为[0,1). 答案:B4.下列函数中既是偶函数又在区间(0,1)上单调递增的是( )A .y =1xB .y =lg|x |C .y =2xD .y =-x 2 4.解析:y =1x,y =2x 不是偶函数,排除A 、C ;y =-x 2是偶函数,但在(0,1)上单调递减,y =lg|x |是偶函数,根据图象,可判断在区间(0,1)上单调递增,故选B.5.函数f (x )=2x +3x 的零点所在的一个区间是( )A .(-2,-1)B .(-1,0)C .(0,1)D .(1,2)5解析:因为函数 f (x )的图象是连续不断的一条曲线,又f (-1)=2-1-3<0,f (0)=1>0,所以f (-1)·f (0)<0,故函数零点所在一个区间是(-1,0)故选B.5.答案:B6.下列函数中,值域是(0,+∞)的是( )A .y = x 2-2x +1B .y =x +2x +1(x ∈(0,+∞)) C .y =1x 2+2x +1(x ∈N ) D .y =1|x +1|6.解析:A 项值域为y ≥0,B 项值域为y >1,C 项中x ∈N ,故y 值不连续,只有D 项y >0正确.6.答案:D7.设f (3x )=9x +52,则f (1)=________.解析:令3x =1,则x =13.∴f (1)=9×13+52=4=2.7.答案:2 8.已知函数f (x )=⎩⎨⎧2x ,x >0,x +1,x ≤0.若f (a )+f (1)=0,则实数a 的值等于( ) A .-3B .-1C .1D .3 8.解析:因为f (1)=2,所以由f (a )+f (1)=0,得f (a )=-2,所以a 肯定小于0,则f (a )=a +1=-2,解得a =-3,故选A.8.答案:A9.若a =3(3-π)3,b =4(2-π)4,则a +b =( )A .1B.5 C .-1D .2π-5 9.解析:∵a =3(3-π)3=3-π,b =4(2-π)4=π-2,∴a +b =3-π+π-2=1.9.答案:A10.有以下四个结论:①lg(lg 10)=0,②ln(ln e)=0,③若lg x =10,则x =100,④若ln x =e ,则x =e 2.其中正确的是( )A .①③B.②④ C .①② D .③④ 10.解析:①lg(lg 10)=0,正确.②ln(ln e)=0,正确.若lg x =10,则x =1010,③不正确.若ln x =e ,则x =e e ,故④不正确.所以选C.10.答案:C11.当0≤x ≤2时,a <-x 2+2x 恒成立,则实数a 的取值范围是( )A .(-∞,1]B .(-∞,0]C .(-∞,0)D .(0,+∞)11.解析:a <-x 2+2x 恒成立,即a 小于函数f (x )=-x 2+2x ,x ∈[0,2]的最小值, 而f (x )=-x 2+2x ,x ∈[0,2]的最小值为0,∴a <0.12.答案:C12.f (x )=|x -1|+|x +1|是( )A .奇函数B .偶函数C .非奇非偶函数D .既奇又偶函数解析:函数定义域为x ∈R ,关于原点对称.∵f (-x )=|-x -1|+|-x +1|=|x +1|+|x -1|=f (x )∴f (x )=|x -1|+|x +1|是偶函数12.答案:B二、填空题:(每小题5分,共 20 分)13.已 知集合 ;13.答案:}8,5,3,1{ 14.lg 5+lg 20的值是________.14.解析:原式=12lg 5+12(lg 4+lg 5) =12lg 5+lg 2+12lg 5=lg 2+lg 5=1. 14.答案:115.若=+=-x x x 44,14log 3则 ;15.答案:310 16.函数y =x )51(-3x 在区间[-1,1]上的最大值等于________. 16.解析:由y =⎝⎛⎭⎫15x 是减函数,y =3x 是增函数,可知y =⎝⎛⎭⎫15x -3x 是减函数,故当x =-1时函数有最大值143. 15.答案:143三、解答题:(共20分)17.已知函数f (x )=2x -12x +1. =⋂==B A B A 则},13,8,5,3,1{},8,5,3,2,1{(1)求f[f(0)+4]的值;(2)求证:f(x)在R上是增函数;(3)解不等式:0<f(x-2)<15 17.解析:(1)∵f(0)=20-120+1=0,∴f[f(0)+4]=f(0+4)=f(4)=24-124+1=1517.(2)设x1,x2∈R且x1<x2,则2x2>2x1>0,2x2-2x1>0,∴f(x2)-f(x1)=2x2-12x2+1-2x1-12x1+1=2(2x2-2x1)(2x2+1)(2x1+1)>0,即f(x1)<f(x2),所以f(x)在R上是增函数.(3)由0<f(x-2)<1517得f(0)<f(x-2)<f(4),又f(x)在R上是增函数,∴0<x-2<4,即2<x<6,所以不等式的解集是{x|2<x<6}。
- 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。
)
A 8.函数
B
C
D ( )
f ( x) 3sin(2 x ) 的图象的一条对称轴为 3 5 2 A. x B. x C. x 6 12 3
D. x
6
9.函数 A. [
y sin( x
2
), x R 是(
)
, ] 上是增函数 2 2
B. [0, ] 上是减函数 D. [ , ] 上是减函数
C. [ ,0] 上是减函数 10.函数 y 2sin x
1 2
A.
5 11
, , 3 3 3
在一个周期内的三个零点可能是( ) 3 2 4 10 11 23 B. C. , , , , 3 3 3 6 6 6
3 2
3 1 , ) ,则 cos θ ( 2 2
C.
)
A.
3 3
B.
1 2
D.
3
4.函数
y 3cos 2 x 的最小正周期是 4
(B ) (C) 2
(
)
(A)
2
2
(D) 3
5.若 cos( A.
)
B.
3 ,则 sin ( 2
17.若( 4,3)是角α 终边上一点,求
cos( 3 ) tan( 4 ) 的值. sin(3 ) cos( 5 )Leabharlann D. 2 5
3 , 3 , 3
二、填空题(每小题 5 分) 11.已知 cos( 12. tan
3
)
27 4
1 2 ) ,则 cos( 2 3
.
=_____
13.已知角 的终边经过点 ( 14.将
3, 1) ,则角 的最小正值是________.
。
17 6
C.
). D.
3 2
3 2
3 2
1 2
6. sin 1, cos1, tan1 的大小关系是 ( A. C.
)
sin 1 cos 1 tan 1 cos 1 sin 1 tan 1
7.函数
sin 1 tan 1 cos 1 D. tan 1 sin 1 cos 1 f ( x) 2 x tan x 在 ( , ) 上的图象大致为( 2 2
换算成角度等于
三、解答题(每小题 10 分,共 30 分) 15.已知 sin
1 1 , (1)求角 所在象限;(2)求 cos 及 tan 的值。 2 2
16.已知函数 y 1 sin (14 分) 3x 1 . 2 6
(1)求 y 取最大值、及最小值,并分别写出其取得最值时 x 的集合; (2)求函数的单调递增区间;
2014-2015 学年度义龙一中第十三周考卷
一、选择题(每小题 5 分,共 50 分)
1. sin(-
600° ) =
B.
(
)
A.
1 2
3 2
/
C. -
1 2
D. -
3 2
2.角 1190 30 是第(
0
)象限角 C.第三象限角 D.第四象限角
A.第一象限角
B.第二象限角
3.如果角
θ 的终边经过点 (