1 . 已知
是定义在
上的奇函数,
.
(1)若
时,
的最大值为2,求
的值;
(2)设直线
,
与函数
的图象分别交于A,B两点,直线
,
与函数
的图象分别交于C,D两点,若存在
,且
,使得
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a4266ae5b43bea012ec6642dfaab78d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a254e9bd3ade9d9e930865a9bab5e83.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6070f2ee5e48cce77eb4a2cb9f11ccfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394f09f5de379c099a853364f87762a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/971905ea129aec0ca7c325f60260c7e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd86badb20015aa65328fda1e43a117.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f7c2479c7acd6e88f9d150a769462f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/971905ea129aec0ca7c325f60260c7e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd86badb20015aa65328fda1e43a117.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c125527ab0e29d5c97022a5a6edf8fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83a6c0fddb9074dfc96be03b4aa24d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5134c9a4a8dd39a7c291bf9b2d2e0e21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2 . 定义在
上的函数
满足
,且当
时,
;当
时,
;当
时,
.若对
,都有
,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c2fe1072a83e6f342bd868fb0a1578.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f7dbb416ec1ff1984a724a4f48bf692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/332c16477a48f62ef66eda7f0d13ed7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790daaa89fc9d093f45023becf765697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e21b60b8b5fffe78a4fe3aed643ed925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a8d578ace45420869dda45ad3b66c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/610cd019ed65786fab5480462802f555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e6a3cc25ae28eb0bc1f41f08706f019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8450d9e13cbf90a6050fb300741b661a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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3 . 已知
,
是不共线的两个向量,
,
,若
,
,则
的最小值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29276b43a2950ed71f0f9629a35dfa74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e439be05778353a378168fdff1dc211.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea13c7c4d2882b6a1ef2ad010d062eb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2f41602f45fc93b51738c74bfe129c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cfe95f520c7b454ceabb2ae9af0a87.png)
A.2 | B.4 | C.![]() | D.![]() |
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2023-04-12更新
|
931次组卷
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5卷引用:湖南省108所学校2022-2023学年高一下学期期中联考数学试题
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解题方法
4 . 世界公认的三大著名数学家为阿基米德、牛顿、高斯,其中享有“数学王子”美誉的高斯提出了取整函数
,
表示不超过
的最大整数,例如
,
.已知
,
,则函数
的值域为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7179c645736d68c90023f83d7f11ed01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/525c5748729c08162cf70b7c746b6bbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/985227b7b4703f3ed8717d0abc4febfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3d01498325fbdf430d207577ed9fbc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a73d6cb7bc30f54159cb5d41300fed0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-03-30更新
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1285次组卷
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5卷引用:湖南省邵阳市第二中学2022-2023学年高二下学期期中数学试题
湖南省邵阳市第二中学2022-2023学年高二下学期期中数学试题2023届高三第七次百校大联考数学试题(新高考)(已下线)专题03 函数(已下线)第三章 函数的概念与性质 讲核心 03(已下线)专题7 取整函数
名校
解题方法
5 . 已知函数
,若对任意实数
,总存在实数
,使得
,则实数
的取值范围是___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1556a1143d9c2cd6f056fcb71784180.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3525be564bee069309e0b480a055a00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2023-03-28更新
|
589次组卷
|
2卷引用:湖南省邵阳市第二中学2022-2023学年高二下学期期中数学试题
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6 . 已知函数
是定义域为
的奇函数.
(1)求
的值;
(2)若对
,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db5a5cc6fe30fcd57fd847cecb1db64a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87008291cdba83461d58dbc9426d777.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/660dc90e30c60c52d7ea55ccb126283c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2023-03-17更新
|
508次组卷
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6卷引用:湖南省长沙市A佳教育联盟2022-2023学年高一下学期3月联考数学试题
7 . 已知函数
,如果存在给定的实数对
,使得
恒成立,则称
为“完美函数”.
(1)判断函数
是否是“完美函数”,并说明理由;
(2)若
是一个“完美函数”,求出所有满足条件的有序实数对
;
(3)若定义域为
的函数
是“完美函数”,且存在满足条件的有序实数对
和
,当
时,
的值域为
,求当
时,函数
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/621aa13044183397ae9689d51e865ef3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff615c7095aa5338a09c07e78c1d5c11.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff47577d97e93c0e2c91c42aa2360466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
(3)若定义域为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69abe959988e4c8c0739f5857ccfb0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f7dbb416ec1ff1984a724a4f48bf692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c1756b564bf1d998d8179637011c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76699b22cc20f34d0ca5fdc2b582818f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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8 . 设
,函数
.
(1)若
,求证:函数
为奇函数;
(2)若
,判断并证明函数
的单调性;
(3)若
,函数
在区间
上的取值范围是
,求
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a6fe56c70ed96e7f0ee48063dae9fc7.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ac9eb4f13a6ec140f7050e8d7dde52c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98e6fca71fccb890f3ad8501ea4f560e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7d42f621464019a86fadf05723784e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8573eecbc29f522671b3892ec406c50b.png)
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2023-03-14更新
|
644次组卷
|
3卷引用:湖南省长沙市雅礼中学2022-2023学年高一下学期3月检测数学试题
名校
解题方法
9 . 已知函数
.
(1)求函数
的单调递减区间;
(2)若对任意
,存在
,求实数
的取值范围;
(3)若函数
,求函数
零点的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/817fb7a84e6293988e09d13b055ac4b5.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73e86bc8775b7d7827d7fd10a7880c46.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b55514ac04cb0b784c5e6e7d7e2f9ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f2001a25162fa8d203f0f1ef9c6246e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5fad5c36c01dd889f2e4a496df4d64b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
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解题方法
10 . 已知函数
对任意实数
恒有
,当
时
,且
.
(1)求
在区间
上的最小值;
(2)若
对所有的
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af2d38cf365e4389c0d3f18ecfa890e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab0c6f119137e1b6760d55956d99d963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36f247866d4020ed309d4e4d121ce445.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b26c416363ab2a9ed000b429540db55e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26b851f738485e3326a196bd472c28d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38d838dbe2fac528f753ed46c431e86a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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