名校
解题方法
1 . 已知函数
.
(1)求函数
的最小值
;
(2)若正实数
,满足
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ab6f4313249dfb3081933eaad0c333c.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)若正实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad07f4f2b46c3e823657a27a155edc1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be94bcdd073e5e6c8137caa90e41b9a.png)
您最近一年使用:0次
2020-09-12更新
|
151次组卷
|
2卷引用:四川省仁寿第一中学校南校区2020-2021学年高三上学期第一次调研考试数学(理)试题
名校
解题方法
2 . 已知函数
.
(1)当
时,解不等式
;
(2)若
,
,
的最小值为1,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4ffac4ed594636b076cb4cc9e18f102.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41bcf1825497d48d0e05ea938f5fc5a0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0acea2598d26b89da69d9e43c6c285f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c38d31b4dd0a6e6cb7918eafe55db9.png)
您最近一年使用:0次
解题方法
3 . 设在二维平面上有两个点
,
,它们之间的距离有一个新的定义为
,这样的距离在数学上称为曼哈顿距离或绝对值距离;在初中时我们学过的两点之间的距离公式是
,这样的距离称为是欧几里得距离(简称欧式距离)或直线距离.
(1)已知
,
两个点的坐标为
,
,如果它们之间的曼哈顿距离不大于3,那么
的取值范围是多少?
(2)已知
,
两个点的坐标为
,
,如果它们之间的曼哈顿距离要恒大于2,那么
的取值范围是多少?
(3)已知三个点
,
,
,在平面几何的知识中,很容易的能够证明
与
,
与
的欧氏距离之和不小于
和
的欧氏距离,那么这三个点之间的曼哈顿距离是否有类似的共同的结论?如果有,请给出证明;若果没有,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88eda79e21c7274b447814bcea5f6d06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e89cff4086177b23e54ea90cc0ddb06e.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24dc2c7849be2c51996056536b668a8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1e5eea5f7f98ca8632358b7e49ceb25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/228e67748b557e32e2eac60f9be6c15c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13ec9c0b2693bcfaed1ef85dd497d747.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)已知三个点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c16dac1e9bf5804c8907cbc59014d04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
名校
4 . (1)求函数
的最大值
.
(2)若实数
,
,
满足
,证明:
,并说明取等条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85d5968e378702dc684ece0674150251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)若实数
![](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/49e25ff2a6f663de678d31d6a0d48dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9d868fbfd148f9047b560d0783e61aa.png)
您最近一年使用:0次
2020-10-10更新
|
461次组卷
|
4卷引用:四川省成都七中2020-2021学年高三10月阶段性测试数学(理科)试题
四川省成都七中2020-2021学年高三10月阶段性测试数学(理科)试题四川省成都七中2020-2021学年度高三10月阶段性测试数学(文科)试题四川省成都市第七中学2020-2021学年高三上学期10月月考数学试题(已下线)专题14 不等式选讲-【备战高考】2021年高三数学高考复习刷题宝典(解答题专练)
2020高三·全国·专题练习
解题方法
5 . 已知a,b,c为正实数,且满足a+b+c=1.证明:
(1)|a
|+|b+c﹣1|
;
(2)(a3+b3+c3)(
)≥3.
(1)|a
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14cbba527df090fb25643ba11d0e2ee3.png)
(2)(a3+b3+c3)(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f93069263d818693184a97a375bfa2.png)
您最近一年使用:0次
2020高三·全国·专题练习
解题方法
6 . 已知函数f(x)=|2x﹣1|﹣3|x+1|,设f(x)的最大值为M.
(1)求M;
(2)若正数a,b满足
Mab,证明:a4b+ab4
.
(1)求M;
(2)若正数a,b满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235465b42c57e9f5351377aaa7722318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f842f5616b9f32d2ad693c3fad0b0623.png)
您最近一年使用:0次
名校
7 . 已知函数
.
(1)若
,求不等式
的解集;
(2)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10360981005a9c1c24131b8c85e0d6.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45ed62542a89e4eaff3644ca4d9e2425.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e89e869459f079972ec2ce537fe950.png)
您最近一年使用:0次
2020高三·全国·专题练习
8 . 已知
.
(1)求使得
的
的取值集合
;
(2)求证:对任意实数
,当
时,
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d298a43a48ab3e3b1de9a03873beb49.png)
(1)求使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/736d35fb5b436cd822304eb8efdcefd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)求证:对任意实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a404843d5eb4546d20a42295631ebb7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc10580ae53f90dfccd9816789fd8861.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d003bfcc971e4c367840bf2e591dd37.png)
您最近一年使用:0次
名校
解题方法
9 . 设函数
.
(1)若存在
使得
,求实数
的取值范围;
(2)若
是(1)中的最大值,且正数
满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e41704e782a18e4fc47cda11f4df5c4c.png)
(1)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a057d3ff513d203309350413223be208.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ce5118394e703092a3ac1deb901eeeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab04de6651256f6281e9f4c1dc3c7955.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deba97f507ced9a7884d4d5c855f4e3a.png)
您最近一年使用:0次
2020-09-22更新
|
75次组卷
|
2卷引用:江西省信丰中学2020届高三上学期月考二数学(文)试题
名校
10 . 设
,
,
.
(1)解不等式
;
(2)
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf53f232cd433b791e3696c0ba97750b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4367e45a47a02037a38bd591dd09f930.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/640cb603fc8315d9e37c97561f6a7b83.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e2405c4822bceae1cf191edb502d3b0.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad5fe274cfc8da2dacfb65801f344ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee59fbe13325820ec6fc47eb5f35d87.png)
您最近一年使用:0次