1 . 设
,
,
,满足
,
,则z的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cad3aaeb5b444feb152378278f68863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21c7501096f4be07c98e97e29db21a21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcf7773acf11cd67f5c43448d661a04.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 集合
的真子集个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a88c4cae3607534af641b9d370cc7e7a.png)
A.7 | B.8 | C.15 | D.16 |
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3 . 已知函数
的最大值为2.
⑴求
的值及
的最小正周期;
⑵求
的单调递减区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eaabc90b58dbc20492d95ad72bcc4b2.png)
⑴求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
⑵求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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4 . 已知
在
上的最大值为M,最小值为N,则M+N=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92babfa3d2ccc236c013a6c7e948b9fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/509ebe7ee19a5dbfdaeb9b28bbe25fda.png)
A.3 | B.2 | C.1 | D.0 |
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5 . 已知
,则对任意
,下列说法中错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f315977e8c623e924148848728d187fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 在数列
中,若
,则称
为“等方差数列”.下列是对“等方差数列”的判断:
①数列
是等方差数列;
②若
是等方差数列,则
是等差数列;
③若
是等方差数列,则
(
,k为常数)也是等方差数列;
④若
既是等方差数列,又是等差数列,则该数列为常数列.
其中正确的命题序号为________ .(将所有正确的命题序号填在横线上)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb7f9567c40424df0e76cf07be4b1f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
①数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df31060266f95483c3b391b8e35d9192.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/362832fa3d3c13c1eafd565349d66dce.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a561552fc52b697f1a7f1c81c2f637.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e36bff57bcfa86432b340e25e51d42.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
其中正确的命题序号为
您最近一年使用:0次
7 . 已知函数
满足:
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8efaed954545e3406e9518de3a947216.png)
,则
( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb20df2c1e35dad97106558531b0ce6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8efaed954545e3406e9518de3a947216.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/391773b73d9ef681a495ac196a097118.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/651492c53f8747a2da821e502a813313.png)
A.![]() | B.-![]() | C.![]() | D.-![]() |
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2019-01-29更新
|
517次组卷
|
4卷引用:2018全国高中数学联赛吉林省预赛
2018全国高中数学联赛吉林省预赛上海市浦东实验学校2018-2019学年高三上学期第一次月考数学试题内蒙古霍林霍市一中2021-2022学年高一年级第一学期12月月考数学试题(已下线)新题型02 新高考新结构竞赛题型十五大考点汇总-1
8 . 函数
的定义域为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d261d2b04c5dfe14722d945220ad1a6.png)
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名校
9 . 已知点P在直线
上,点Q在直线
上,PQ的中点为M(
),且
,则
的取值范围是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3aa3adcb154f6144903d456289ecb0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9315b85140f138a28c6c9636a48bc441.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8750c7a9d012d136a878dc8f4233dfb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbf5846b5bc826a27cf3fdaff4750e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf05e22049aa0a0dc9bb7bb4714a58d.png)
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10 . 如图,在直角三角形ABC中,
,
,点P是斜边AB上一点,且
,那么![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a500de3d45829f2c2a7f73932b9fc1f7.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13ba5383e768dc86e1bfd79c10f96f4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209acf15985d1ea1ad86fc4a37e38c0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6864a5a006350fe18591c1a1f1b96553.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a500de3d45829f2c2a7f73932b9fc1f7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/336ded55-f1fb-4830-98ab-c3cb76e3fd6e.png?resizew=128)
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