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1、ideological and theoretical qualities and practical working ability, and strive to build a contingent of league cadres with positive work style and high quality. Hold a regular meeting of the party secretary every fortnightly, arrange the work of the regiment, feedback the student information. Focus
2、 on training junior high school, junior high school secretary of the regiment branch to enable them to raise A firm political conviction, diligent and diligent learning spirit and practical and innovative work style.江西省赣州市信丰县2016-2017学年高二数学下学期期中复习试题 理 一、选择题1、已知自由下落物体的速度为V=gt,则物体从t=0到t0所走过的路程为( ) A B
3、 C D 2、曲线与坐标轴围成的面积是( )A.4 B. C.3 D.23、定积分 ()dx等于()A4 B2 C2D44、如图:A,B,C,D,E五个区域可用红、蓝、黄、白、绿五种颜色中的某一种着色。要求相邻的区域着不同的颜色,则不同的着色方式种数有( )A16 B120 C360 D540ABC DE5、将5名实习教师分配到高一年级的3个班实习,每班至少1名,最多2名,则不同的分配方案有 ( )A30种B90种 C180种D270种6、某文艺小分队到一个敬老院演出,原定6个节目,后应老人们的要求决定增加3个节目,但原来六个节目的顺序不变,新增的3个节目既不在开头也不在结尾,则这台演出共有(
4、 )种不同的演出顺序。A 200 B210 C220 D2887、设(2x-3)4=,则的值为( )A.1 B.16 C.-15 D.158、设的展开式的各项系数之和为M,二项式系数之和为N,若MN=56,则展开式中常数项为( )A15 B1 5 C10 D109、数列中,a1=1,Sn表示前n项和,且Sn,Sn+1,2S1成等差数列,通过计算S1,S2,S3,猜想当n1时,Sn=( )ABCD110、用数学归纳法证明不等式(n2)的过程中,由nk递推到nk1时不等式左边()A增加了一项 B增加了两项和C增加了选项B中的两项但减少了一项 D以上均不正确11、如图,矩形内的阴影部分是由曲线,及直
5、线与 轴围成,向矩形内随机投掷一点,若落在阴影部分的概率为,则的值是( )A B C. D12、已知, ,为的导函数,若,且,则的最小值为( )ABCD二、填空题13、从1,2,3,9九个数字中选出三个不同的数字a,b,c,且abc,作抛物线yax2bxc,则不同的抛物线共有 条(用数字作答);14、若的展开式中的系数为,则的值为_;15、已知,函数在上为增函数的概率是 ;16、如图是网络工作者经常用来解释网络运作的蛇形模型:数字出现在第行;数字出现在第行;数字(从左至右)出现在第行;数字出现在 第行,依此类推,则第行从左至右的第个数字应是 三、解答题17、(本小题10分)设两抛物线所围成的图
6、形为,求:(1)的面积;(2)将绕轴旋转一周所得旋转体的体积18、(本小题12分)在数列an中,a11,a2,且an1(n2)(1)求a3,a4,并猜想an的表达式;(2)用数学归纳法证明你的猜想19、(本小题12分)7个人按如下各种方式排队照相,有多少种排法?(I)甲必须站在正中间; (II)甲乙必须站在两端;(III)甲乙不能站在两端; (IV)甲乙两人要站在一起20、(本小题12分)已知,(I)求的值;(II)求的值;(III)求的值;21、(本小题12分)已知在的展开式中,第6项为常数项(1)求;(2)求含项的系数;(3)求展开式中所有的有理项22、(本小题12分)已知二次函数f(x)
7、x2x,设直线l:yt2t (其中0t,t为常数),若直线l与f(x)的图象以及y轴所围成封闭图形的面积是S1(t),直线l与f(x)的图象所围成封闭图形的面积是S2(t),设g(t)S1(t)S2(t),当g(t)取最小值时,求t的值 2016-2017学年第二学期高二理科数学期中复习卷(三)答案16:ACCCBB 712:CBBCBC 13、84 14、 15、 16、19417、简解:18、解:(1)容易求得:a3,a4.故可以猜想an,nN.(2)下面利用数学归纳法加以证明:显然当n1,2,3,4时,结论成立;假设当nk(k4,kN)时,结论也成立,即ak.那么当nk1时,由题设与归纳
8、假设可知:ak1 .即当nk1时,结论也成立,综上,对任意nN,an成立19、解:(I)甲站在正中间,其他6人可以任意站,共有(II)甲乙站在两端有种;其他5人站里面有,所以共有种(III)在甲乙以外的其他5人中取出2人来站两端有种,剩下的5人站里面有,共有种(IV)将甲乙当成一个整体和其他5人共当成6个来排有种,另外甲乙可以掉换位置有种,所以共有种20、解:(I)令,则再令,则,所以=(II)令, (1)令, (2)(1)+( 2)得所以 (III)由二项式定理得:,所以 =令, 而 ,所以=21、解:(1)根据题意,可得()n的展开式的通项为=,又由第6项为常数项,则当r=5时,即=0,解
9、可得n=10(2)由(1)可得,Tr+1=()rC10r,令,可得r=2, 所以含x2项的系数为,22、解:据题意,直线l与f(x)的图象的交点坐标为(t,t2t),由定积分的几何意义知:g(t)S1(t)S2(t)dxdxdxdx|t3t2t,g(t)4t23t(8t26t1)(4t1)(2t1),令g(t)0,则t,或t(不合题意,舍去)当t时,g(t)0,g(t)递减;当t时,g(t)0,g(t)递增故当t时,g(t)有最小值Strengthen the team connection, strengthen the knowledge education among the stude
10、nts (especially the first grade students), and promote the formation of good school spirit with the influence of the league members. All League branches should start with recommending outstanding students as the development objects of the League, take amateur league schools as the basis, conscientio
11、usly do a good job in the work of pre-league education, league membership education, League members vanguard exemplary consciousness education, excellent league members education, etc. Under the premise of ensuring the quality, the development quantity of league members will increase steadily, and t
12、he ranks of league members in middle schools will be strengthened constantly. It is planned to develop a group of new league members in April and mid-October.2. Carry out the regular meeting system of the League branch, and strengthen the ideological accomplishment and the training work in the field
13、 of business. League cadres are the backbone of the work of the League, and their quality directly affects the quality of the work. Therefore, they plan to use their extracurricular activities on Wednesday to open special training and other forms of study activities. To help the regiment cadres improve their ideological quality and professional skills, improve their5