名校
1 . 定理(三角不等式),对于任意的
、
,恒有
.定义:已知
且
,对于有序数组
、
、
、
,称
为有序数组
、
、
、
的波动距离,记作
,即
,请根据上述俼息解决以下几个问题:
(1)求函数
的最小值,并指出函数取到最小值时
的取值范围;
(2)①求有序数组
、
、
、
的波动距离
;
②求证:若
、
、
、
且
,则
;题(注:该命题无需证明,需要时可直接使用).设两两不相等的四个实数
、
、
、
,求有序数组
、
、
、
的波动距离
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dd0914dc4d4c7f75710ff460a286fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49506c61cf5c61605f1cf90a440348cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4613271f782a90ab580131d09d03d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dec475a4298eab592d6589aab8915276.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ef141315bf951ddcd300f0743a16897.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7cfd590897d8d908066c781c63a812d.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d3b887215cd1514d3e2e79063729a4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)①求有序数组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7330e52932883877de428cfe91962b96.png)
②求证:若
![](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/7a876ecb804eb0553c246e5fcc40b708.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b73abfe4bc26b1ded680d7abb1a2cac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/effb89a4bffb74028211ecfe671b79d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d46944e1594eec140cacd7b454342561.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cc0ce632fa217dc77f6c92afd311815.png)
您最近一年使用:0次
2022-08-22更新
|
417次组卷
|
7卷引用:上海市控江中学2021-2022学年高一上学期期中数学试题
上海市控江中学2021-2022学年高一上学期期中数学试题上海市高桥中学2022-2023学年高一上学期期中数学试题(已下线)期中模拟预测卷03(测试范围:前三章)-2022-2023学年高一数学上学期期中期末考点大串讲(沪教版2020必修第一册)(已下线)上海高一上学期期中【压轴42题专练】(2)(已下线)第二章 等式与不等式(压轴题专练)-速记·巧练(沪教版2020必修第一册)上海市吴淞中学2023-2024学年高一上学期期中数学试题(已下线)专题02 等式与不等式(练习)-2
名校
解题方法
2 . 已知函数
,
.
(1)求函数
的最小值;
(2)设
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a483b28b0a51697e711e832a5ca3d00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0bc6775d59e23a45d1c4357d5ffe228.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cfcc567b95a320abcb25509923cd001.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76acc9d0f0f0f6befbb9d9a64c497d2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef791a5215dfbde16dea9499dda72a53.png)
您最近一年使用:0次
2023-07-27更新
|
302次组卷
|
8卷引用:四川省成都市石室中学2023-2024学年高一下学期开学考试数学(理科)试卷
3 . 已知函数
.
(1)若
,求不等式
的解集;
(2)若
,求证:方程
只有一个实数解.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18643fd4aa69dea2153b40f8ddc52489.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55feb3cbcaf37c63b6ce1c5abece8af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e1a4f3d0f4f608ea4e8481843d19429.png)
您最近一年使用:0次
4 . 已知实数a、b、c、d,显然
,定义两实数的误差为两数差的绝对值.
(1)求证:
;
(2)若任取a,
,a与c的误差、b与d的误差最大值均为0.1,求ab与cd误差的最大值,并求出此时a、b、c、d的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb25c1dd07c324d3e73107e4c1beba6e.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be03ef85605451c2805bc0a9666d5e84.png)
(2)若任取a,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/174dfe527d102db8720f79e281e4462b.png)
您最近一年使用:0次
2022-11-16更新
|
76次组卷
|
2卷引用:上海市上海大学附属嘉定高级中学2022-2023学年高一上学期期中数学试题
解题方法
5 . 已知
是任意非零实数.
(1)运用定理“两个实数和的绝对值小于等于它们绝对值的和”证明:
,并指出等号成立的条件;
(2)求
的最小值;
(3)若不等式
恒成立,求实数x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(1)运用定理“两个实数和的绝对值小于等于它们绝对值的和”证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd7d1b109311c3f4c63697f98e9000a1.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ac54056610e9b914091eb83ad5ab35f.png)
(3)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae0c7ccef6a693f768a06da80e9872b1.png)
您最近一年使用:0次
解题方法
6 . (1)已知
,
,求证:
.
(2)
,解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f370a1d4dd341e5ab1774a66c66c1204.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2665c873730c8019c5c7e9b6d626502c.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcc81b9154607309b37218fff7d02806.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c7679f885826301bb5a826ba7bcea01.png)
您最近一年使用:0次
解题方法
7 . (1)已知
,用反证法证明:
中至少有一个大于等于0;
(2)已知
的最小值是1,求实数a的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fcf02c0e2c50020b77aadad8b0a2c77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fe50c6c8d2c3f3db25f06f0392ed054.png)
您最近一年使用:0次
8 . 我们知道,二元实数对
可以表示平面直角坐标系中点的坐标; 那么对于
元实数对![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60a79b7ec77425af9152ef0cd3dacfe9.png)
,
是整数
,也可以把它看作一个由
条两两垂直的“轴”构成的高维空间(一般记为
中的一个“点”的坐标表示的距离
.
(1)当
时, 若
,
,
, 求
,
和
的值;
(2)对于给定的正整数
,证明
中任意三点
满足关系
;
(3)当
时,设
,
,
,其中
,
,
,
.求满足
点的个数
,并证明从这
个点中任取11个点,其中必存在
个点,它们共面或者以它们为顶点的三棱锥体积不大于
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a79a33a83a7ba57a34b5093d1d1d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60a79b7ec77425af9152ef0cd3dacfe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf1c689bacb131759ccd37e444a9479.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/837d6c4f226776680f464ae63f90a845.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80ebc8c7e32c1b561a908a36cfa2cbb5.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2d3df37e73a8abea815f37dbb3fff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/115a0c87ac14dbb770c95d74d6e26073.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/567fc6dde8cea2eccafe83048ed9b650.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/445fa8fa15fbb33d26fff11f18113cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3bcb4828b16c8e845492f1a53ddd9a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cdfd65ee99c3d93adee6732ae125eb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1740273d1682d06d35e35a733225613d.png)
(2)对于给定的正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93de25834c572256e25333010fbda97b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1898f935cafa18dc3e7ea4cea8b46df.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a42bc893aeabafad84da3e66e73f885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58dcb69f052798e9238906eb18031a0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1b82ad92798b264062c062f4a9a1a5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72551dcd7eb2722ee2ef5f5054a751e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c7135c6c4b5aa75a8efa8171dbba42b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a391005600bdd69c96750589f9adb048.png)
您最近一年使用:0次
名校
解题方法
9 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5b01b255d26c61e1ae35bc21bac2a3.png)
(1)判断并证明函数
的奇偶性;
(2)判断函数
在区间
上的单调性(不必写出过程),并解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5b01b255d26c61e1ae35bc21bac2a3.png)
(1)判断并证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe86cace140f2c3588ab115837bbfc9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56bee58ad3709822b286197f03d71773.png)
您最近一年使用:0次
2022-02-04更新
|
1800次组卷
|
9卷引用:安徽省合肥市第六中学、第八中学、168中学等校2021-2022学年高一上学期期末联考数学试题
安徽省合肥市第六中学、第八中学、168中学等校2021-2022学年高一上学期期末联考数学试题河南省濮阳市第一高级中学2021-2022学年高一下学期第一次质量检测数学试题吉林省松原市重点高中2021-2022学年高一3月联考数学试卷河南省开封市五县2021-2022学年高一下学期期末考试数学试题河北省沧州市2022-2023学年高一上学期期末数学试题湖北省鄂东南三校2022-2023学年高一下学期3月联考数学试题湖北省武汉榕霖文化艺术学院2023-2024学年高一上学期12月月考数学试卷贵州省黔西南州金成实验学校2023届高三上学期第一次月考数学试题宁夏银川市贺兰县第二高级中学2023届高三上学期第一次月考数学(理)试题
解题方法
10 . 已知函数
.
(1)若
,且
,求
的取值范围;
(2)若
在
上有零点,求证:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dd340af8d33b00f72394d033e04856e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e65a4c62cceb75d2b85e136c38da08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b446bc19f96fab880012a3d053b4bdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b246aa3b56becc905d3fb64c6d5ec4a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417ab20883d799aaf311371393fa7d7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a380067a20c25338eb0312e8df6c2760.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2999b8725bda6436940bdbaf51109da5.png)
您最近一年使用:0次