解题方法
1 . 设
,
,若
,其中
是自然对数底,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8610232c77741a37463feba1a66c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279dac0a479f9f605b5d0582a386427f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2 . 请从下面两个条件中任选一个,补充在下面的横线上,并解答.①
;②
.
已知函数
.
(1)选择 ,求
的值;
(2)在(1)的条件下,求
的单调区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a34e9794d31b207750914222a39d9036.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf116ecbdb894c1d05d5b3b5203c10a6.png)
已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3babdc3d07579c8ad2bbdd1809eee864.png)
(1)选择 ,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)在(1)的条件下,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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2021-11-12更新
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247次组卷
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3卷引用:江苏省南京市第一中学2021-2022学年高二下学期5月阶段性检测数学试题
3 . 设
,
,
.
(1)求
的最大值;
(2)是否存在实数m,使不等式
在
上有解.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1070548fe8db4afd1daa0f712f6bb31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/513c40272c476b23a4713658114f288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae9f908aabcd9d9c46a0ecdfd1d6c12.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)是否存在实数m,使不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cbd7a5e6eab47b086609e9712eb04fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/517daac9aa260866798457d3018c64bd.png)
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4 . 已知定义域是全体实数的函数
满足
,且
,
,现定义函数
,
为:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3e655c76c191ba640ea82379a3f2aa6.png)
,其中
,那么下列关于
,
叙述正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0ee9a4b4b53a26c41ff6f41bf29119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/443f99d650e24d53e95549a20461384e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87d4bf50b179da87140027afcb50ea7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60c014250dc069a51f14c59ef14b8e2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7787903ff7c475c8dac69a17a9063586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3e655c76c191ba640ea82379a3f2aa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed54e91426a6381c9e527f5bed60f3fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99074f989e74d5ff306b4b7b7a379c1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60c014250dc069a51f14c59ef14b8e2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7787903ff7c475c8dac69a17a9063586.png)
A.都是偶函数且周期为![]() |
B.都是奇函数且周期为![]() |
C.都是周期函数但既不是奇函数又不是偶函数 |
D.都不是周期函数 |
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2021-07-15更新
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2卷引用:上海市文来高中2023届高三上学期期中数学试题
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5 . 下列说法正确的是___________ .
①平面内到定点与定直线的距离相等的点的轨迹是抛物线.
②利用最小二乘法原理求回归直线,就是使残差平方和最小的原理求得参数b的.
③在线性回归模型中,计算相关指数
,这表明解释变量只解释了60%预报变量的变化.
④若存在实数
,使
,
,对
恒有
,则
是
的一个周期.
①平面内到定点与定直线的距离相等的点的轨迹是抛物线.
②利用最小二乘法原理求回归直线,就是使残差平方和最小的原理求得参数b的.
③在线性回归模型中,计算相关指数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aef7e438f465270e6301ca38ebb8bd72.png)
④若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96b743603ab1c10330622f16db78dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d7c7b4934410a1727fe7024a6bd740f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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6 . 定义
,
为不超过x的最大整数,例如
,
,
,若区间
(
为正整数)在数轴上任意滑动,则区间
取盖数轴上整数的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a387be99df1a08eeb3e5c7a001942aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c7388c96da7afc1e3a873eed6445c0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/468a718f41c3efbe92c282fd4e9b2c89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33791bb430f4f1ee9e399a384400b2f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc378f648640ad5ff52e2a843675fd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b85a97933a1d984f6e484b4021c800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64da75a02173c2a5eb40f4c68d0f4f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b85a97933a1d984f6e484b4021c800.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2021-07-13更新
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5卷引用:河南省信阳市2021-2022学年高二下学期期末数学(文)试题
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解题方法
7 . 若直线
与曲线
相交于
,且
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e136e7637543c8ae92c8dcd55b31924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969039f74bce78b9858111b558dde1d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35644a7d25d0410409238f52c8818083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579e25d11735baa04f503c0eb990ebf4.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2021-07-19更新
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219次组卷
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2卷引用:重庆市万州第二高级中学2021-2022学年高二下学期六月第二次质量检测数学试题
8 . 对于分别定义在
,
上的函数
,
以及实数m,若存在
,
,使得
,则称函数
与
具有关系
.
(1)分别判断下列两组函数是否具有关系
,直接写出结论;
①
,
;
,
;
②
,
;
,
;
(2)若
与
具有关系
,求m的取值范围;
(3)已知
,
为定义在R上的奇函数,且满足:
①在
上,当且仅当
时,
取得最大值1;
②对任意
,有
.
求证:
与
不具有关系
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c296e45b84cf67a98939aa7334e7d478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4413796ac3d5ca067bf70334101f5440.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e3ac1b540727626af78788a8e5f15de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bb566e204173c8aab153deea56647d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/834925e383a1e904951eea76b55bcb4f.png)
(1)分别判断下列两组函数是否具有关系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a5d8bc28ee110a9540f383828b7d245.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e44284cb19805a584880a686ac3df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1591d4244dcf5539a4ae98f554e91e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5466c28592d45ca35059382b351d583f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f47c01925c796e12f2729fdfd7ba0393.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99eaeb2ab68a49074d623ffca072fed8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fb40a36a293471742ce75f6b9635b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89a768cc949e4d1ca3effaa7f82b2156.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a79d7f73b6128650bf7aed538260c72.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7f9b35017daa8b524c5717a355834a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d52e17441c2714d5452bf0f8a4a8bb8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/834925e383a1e904951eea76b55bcb4f.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
①在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57a78355986534b6e50bd7cabc9290a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede97915bccd6a7b22d7400c30f8adea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
②对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d34920b65547eb53779a49ef2274167.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aed3b4ee9510062c8e9aa0e0ffdfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37945d8782048ba94d099fa059fbfb03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0127f7421ce1839e335f091d730736af.png)
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9 . 对于给定的函数
,记
,
.
(1)若
,用列举法表示集合
、
;
(2)若
在其定义域上是增函数,求证:
;
(3)若
,记函数
的反函数为
,若关于
的方程
有实数解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/238fd45932a9b7d19c1a1c0cabd08bed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12f5d0f290fe00a8e016a6f62106f7f1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb607611a8425a0cb3d423c465ee433c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a70d32c64918aa4d1d9d3ce0bdbf7b.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30f77d7c7810e459399bcdd6ba32a466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c9afb528423ed6c19355ca8bd8f2359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a150213bd877f0fd2a09f23fda2723b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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10 . 在下列说法中
①若函数
定义域为
,
,则其值域为
;
②已知
,对于任意
,
,且
,都有
;
③函数
,
且
的图象不过第一象限,则
,
;
④函数
与
的图象有且只有三个公共点;
⑤不等式
对满足
的一切实数
都成立,则
;
⑥定义:如果对任意一个三角形,只要它的三边长
,
,
都在函数
的定义域内,就有
(a),
(b),
(c)也是某个三角形的三边长,则称
为“三角形型函数”.函数
,
,
是“三角形型函数”.
其中你认为正确的有__ ;
①若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a04546d92fd165fc1ad2cc82c2dbb25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f124fb9eab689c537bb5ddf5012e35f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/540b1c1d264521bb5d94b24789101793.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0a1850af7f41943dc2d09017410727f.png)
②已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af07d272da54872ad5a5d2c8181760af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f1a5699410baa270f3fa8153ab346e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f95b2a374ef051a3aadaf5cc2ed055b7.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8f989737e3cc5ec3a8d6b798a05a9dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5d74d706d2e4392e25016e9101d07ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37fa1476cf3552b9ae91ef039b1c6c80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbea4ca0ff380f26dfe064a4f1921504.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b9643da0c0fea4f099f9a9133d6076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
⑤不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f05b0432e78aca5cc51aac1caa12a1d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/138191693e902bc728981bc6b399f702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30e8b1b2f02a67f9419e76cce7d568ac.png)
⑥定义:如果对任意一个三角形,只要它的三边长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/635e48dd8da911c43ec55a368aa6debc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9c607fe139845fac91b6f00c10b33f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7ddb5245cbaa046b6e554dcb540a88.png)
其中你认为正确的有
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