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    2021届江苏省苏州市相城区高三第一学期阶段性诊断测试数学试卷(word版,含答案)

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    2021届江苏省苏州市相城区高三第一学期阶段性诊断测试数学试卷(word版,含答案)

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    这是一份2021届江苏省苏州市相城区高三第一学期阶段性诊断测试数学试卷(word版,含答案),共12页。试卷主要包含了 已知函数f则等内容,欢迎下载使用。
    苏州相城区2020-2021学年高三第一学期阶段性诊断测试数学试卷注意事项:1.答卷前,考生务必将自己的姓名考生号等填写在答题-卡和试卷指定位置上;2.本试卷满分150,考试时间120分钟;3.答案一律填涂在答题卡上,写在试卷上无效单项选择题:本题共8小题,每小题5,40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.设集合A= {x|1≤x≤3}, B= {x|2<x<4}, A∩B=( )A. {x|2<x≤3}   B. {x|2≤x≤3}   C. {x|1≤x<4}   D. {x|1<x<4}2.命题的否定是( )A.x>2, x2-4≤0       B.x≤2, x2-4≤0C.x> 2,      D.3.eqWmf183GmgAAAAAAAIAU4AMACQAAAABxSQEACQAAA3EDAAAEADQBAAAAAAUAAAACAQEAAAAFAAAAAQL/
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OACKAQAAAAD/////XOESAAQAAAAtAQMABAAAAPABAgADAAAAAAA=恒成立的函数有()       11.已知a>0, b>0, a+b=2,则下列结论正确的有( )      12.把方程1表示的曲线作为函数y= f(x)的图象,则下列结论正确的有( )A.函数f(x)的图象不经过第三象限B.函数f(x)R上单调递增C.函数f(x)的图象上的点到坐标原点的距离的最小值为1D.函数g(x)=2f(x)+x不存在零点填空题:本题共4小题,每小题5,2013. 关于x的方程)有两个不等实根,一个大于1,一个小于1,则实数m的取值范围为____.14.已知一个圆柱的轴截面是周长为12米的长方形,则满足这个条件的圆柱的最大体积是___ 立方米15.设点P是曲线上任一点,则点P到直线x-y= 0的最小距离为_______.16.函数若方程f(x)=-x+ m有且只有两个不相等的实数根,则实数m的取值范围是___.解答题:本题共6小题,70.解答应写出文字说明证明过程或演算步骤.17. (本小题满分10)已知函数的定义域是集合A,函数的值域是集合B.(1)a=1,求集合A;(2)xAxB的充分不必要条件,求实数a的取值范围.  18. (本小题满分12)已知函数0a≠1).(1)判断并证明函数的奇偶性;(2)________, 判断并证明函数的单调性(0<a<1,a>1,这两个条件中任选一个,将题目补充完整,再作判断证明).:(2)小题中,如果选择多个条件分别解答,按第一个解答计分.   19. (本小题满分12)已知函数(1)f(x)的单调区间;(2)f(x)在区间[0,1]上的最小值.   20. (本小题满分12)2020920,阳澄西湖南隧道相城段主体完工,它是国内首条穿湖双层叠加超深超宽隧道.建成后,将极大地方便周边市民的通行.为了保障通行安全,汽车在隧道内行驶时,需要保持适当的安全车距.安全车距d (单位: m )正比于车速v(单位:km/h)的平方与车身长l(单位: m )的积,(其中k是比例系数)且安全车距不小于半个车身长.经测算,当车速为60km/h,安全车距为5.76个车身长.(1)试求比例系数k的值;(2)试写出车距d与车速v之间的函数关系式;(3)交通繁忙时段,应规定车速为多少时,可使隧道的车流量(单位时间内通过的车辆数)最大?    21. (本小题满分12)已知二次函数满足f(-2)=0且方程f(x)=x有两个相等实根.(1)求函数f(x)的解析式;(2)解不等式(3)当且仅当x[4,m],不等式f(x-t)≤x恒成立,试求t, m的值.   22. (本小题满分12)已知函数的极大值为其中e= 2.71828...为自然对数的底数.(1)求实数b的值;(2)若函数对任意x(0,+∞),不等式g(x)≥af(x)恒成立.(i)求实数a的取值范围;(ii)证明:.

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