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1 . 某公园草坪上有一扇形小径(如图),扇形半径为
,中心角为
,甲由扇形中心
出发沿
以每秒2米的速度向
快走,同时乙从
出发,沿扇形弧以每秒
米的速度向
慢跑,记
秒时甲、乙两人所在位置分别为
,
,通过计算
,判断下列说法是否正确:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/0571c117-67e0-4a72-aab0-008b42eee53f.png?resizew=168)
(1)当
时,函数
取最小值;
(2)函数
在区间
上是增函数;
(3)若
最小,则
;
(4)
在
上至少有两个零点;
其中正确的判断序号是______ (把你认为正确的判断序号都填上)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95394626ccd5a282232c20a751894713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c0927afc571a7c966c98192040979e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4966e5af166b69a0a38a98abf555b6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f67f9411359267213daaa8fac3df71c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47a5926f60339afee638ac1429b8762b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07f288468a64851abfa926e541b24c84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78ece19a1760421e9b243e64ad93830d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/0571c117-67e0-4a72-aab0-008b42eee53f.png?resizew=168)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a646fb1459ac2adb931234b6e4f57a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2709ca478fb15ea08e8aa55328eae8e6.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4dafff83fd807d0010d1805d9f4552e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/091eb7fb0054ec40a874663deee76429.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/089fb3161f654d27fe750a90f4c851ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dbc555ec98d90f6adc0b354f8c38bb0.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba5eac1c60608ae3c358434f8c5da86a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1884b0525f15220a3aa966f75928daca.png)
其中正确的判断序号是
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3卷引用:上海市行知中学2018-2019学年高三上学期期中数学试题
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2 . 已知定义域为
的函数
,则此函数图象上关于原点对称的点有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f16fd44f703a25dfb74a5d82ddbc79d6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 对于实数
,定义
为不小于实数
的最小整数,如
,
,
.若
,则方程
的根为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eee49c86c7abaea7e4a306c1faa4b0f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a2cd7f904b944f5603c3996515c76c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11344b87c277030fc1c56d35a48e32aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a688e836de1dc272ad956f02f29691e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/335e50abc041caf57cd0a70443e3438e.png)
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4 . 已知函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)求
的取值范围,使
在闭区间
上存在反函数;
(2)当
时,函数
的最小值是关于
的函数
,求
的最大值及其相应的
值;
(3)对于
,研究函数
的图像与函数
的图像公共点的个数,并写出公共点的横坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b35abc4886f393e4c6792d5ac25d87a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a92ba8b43bebdf7d6c40917f4d3e110.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966d9dd819cba29980da3700422c2497.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a675b062ab139d92504d1b9d8667f12e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a675b062ab139d92504d1b9d8667f12e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a68591cf3ce4c7634dcc801711fad0d.png)
您最近一年使用:0次
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5 . 当x、y∈(0,1)时,
的最大值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/236cc85b649415cedfe0e9684427f0ab.png)
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6 . 已知数集
具有性质
:对任意的
、
,
与
两数中至少有一个属于
.
(1)分别判断数集
与
是否具有性质
,并说明理由;
(2)证明:
且
;
(3)证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6633c9aead10ed42850e64fa9369bcb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cad037db16405f93358fb962ee86489.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f52783e7a39f438adf08ef7d05d8c78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf9fc9e8c9940547678ff7934363f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(1)分别判断数集
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/997bbd93dff19a5dba79bcd9d92f3129.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13470c4e9665748fdd20d0b181abc8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4049e63727f73d80c8b0b12b795285ac.png)
(3)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7a1d739890a8951586e23b78b035bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf9dc7279315aeb812605ce4cf8a4a9.png)
您最近一年使用:0次
2019-11-08更新
|
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2卷引用:上海市进才中学2019-2020学年高一上学期10月月考数学试题
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7 .
是有理数集,集合
,在下列集合中:
①
;②
;③
;④
.
与集合
相等的集合序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee71984624199df2f35a4db033b12d7c.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96b1c61c39cbb2ba15f53691c1149512.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e54a64286dc5b41da2aafd4cf914213.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13a8337ed58e6383c15992cc278c754c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3b4ad69ebfcfd165587671fcfc16723.png)
与集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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5卷引用:上海市吴淞中学2019-2020学年高一上学期10月月考数学试题
上海市吴淞中学2019-2020学年高一上学期10月月考数学试题上海市进才中学2019-2020学年高一上学期10月月考数学试题上海市嘉定区第二中学2020-2021学年高一上学期期中数学试题上海市南洋中学2021-2022学年高一上学期期中数学试题(已下线)高一上学期期中【压轴60题考点专练】(必修一前三章)-2022-2023学年高一数学考试满分全攻略(人教A版2019必修第一册)
8 . 设集合
,若非空集合
同时满足①
,②
(其中
表示
中元素的个数,
表示集合
中最小元素),称集合
为
的一个好子集,
的所有好子集的个数为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f12247711394ed07a2f6a7c27f73eea8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e782887fa9cd8934bc19cc1288d5f51c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28a462820b4535b1fa5a75c7c6e9547b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc8279d9dd0b7750953cb9e2098b3b90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d9b9765625c0a2b3a7c6850983f3400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
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6卷引用:上海市进才中学2019-2020学年高一上学期10月月考数学试题
上海市进才中学2019-2020学年高一上学期10月月考数学试题上海市复旦附中2019-2020学年高三上学期9月综合练习一数学试题上海市宝山区行知中学2020-2021学年高一上学期期中数学试题上海市中国中学2020-2021学年高一上学期12月月考数学试题(已下线)专题05 集合与常用逻辑用语压轴题型汇总-2021-2022学年高一《新题速递·数学》(人教A版2019)福建省福州市闽侯县第一中学2021-2022学年高一上学期第一次月考数学试题
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9 . 已知
,若方程
有唯一解,则实数
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd06ecf4a20ac0f91d42818f25be33ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdf5a89dce1534766ecc26ffd2dc9afa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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|
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6卷引用:【市级联考】黑龙江省齐齐哈尔市2019届高三第二次模拟考试数学(理)试题
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10 . 已知函数
,函数
有四个不同的零点
、
、
、
,且满足:
,则
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a64581f9a48811089063d9602eaf15b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9c92128913cda255fa47cbb808809a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365b38a7689a8eede6820cd6f1fe952b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3604274ad6707a906eba371a9e884144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c52c147cc77232fc38526d670ce28dae.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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5卷引用:【全国百强校】江西省南昌市第二中学2017-2018学年高二下学期期末考试数学(理)试题