名校
1 . 已知函数
,若
,且
,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0229135e0b387e41134d1753c70a630c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2958030ec9d7543dda1f529593a915e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aba934874cc9f2ab272fdff67ea23bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4741556c029b5811318746d837cf246.png)
您最近一年使用:0次
2017-11-26更新
|
746次组卷
|
7卷引用:山东省烟台市实验中学2018届高三上学期第三次诊断考试文科数学试题
2 . 已知函数
(
且
)的图象恒过点
,若直线
(
)经过点
,则
的最小值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d766336325fd08620f9512bde87198ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060e7930731eddbcfac592b808e9b698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f6e613ffa032e7e893daa1970d3948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
A.2 | B.3 | C.4 | D.5 |
您最近一年使用:0次
2017-05-22更新
|
511次组卷
|
2卷引用:山东省烟台市2017届高三适应性练习(二)数学(文)试题
11-12高三上·福建泉州·期中
3 . 某造纸厂拟建一座平面图形为矩形且面积为162平方米的三级污水处理池,池的深度一定(平面图如图所示),如果池四周围墙建造单价为400元/米,中间两道隔墙建造单价为248元/米,池底建造单价为80元/米2,水池所有墙的厚度忽略不计.
(1)试设计污水处理池的长和宽,使总造价最低,并求出最低总造价;
(2)若由于地形限制,该池的长和宽都不能超过16米,试设计污水池的长和宽,使总造价最低.
(1)试设计污水处理池的长和宽,使总造价最低,并求出最低总造价;
(2)若由于地形限制,该池的长和宽都不能超过16米,试设计污水池的长和宽,使总造价最低.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/6/d58af228-4356-4560-9ac2-b5144163db82.png?resizew=190)
您最近一年使用:0次
2012·山东烟台·模拟预测
名校
4 . 在实数集R中定义一种运算“△”,且对任意
,具有性质:
①
;②
;③
,
则函数
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a6d8c5f980cc6e2581d6ecdedb8cfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2be856e51e91c9b73ea09a8cf5592e12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18674648e607674799b7a6349c7c1ec4.png)
则函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf8ae70317e872238cedab498414b453.png)
您最近一年使用:0次
11-12高三·山东烟台·期末
5 . 已知在平面直角坐标系
中,向量
的面积为
,且
,
.
(1)设
,求向量
与
的夹角
的取值范围;
(2)设以原点
为中心,对称轴在坐标轴上,以
为右焦点的椭圆经过点
,且
,当
取最小值时,求椭圆的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2031522e069b401e327110e535993fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb99c1873bfb3d6ed1aeab59179c2780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26337f5eab93cf705e9805dc9fc53c64.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9dd2c797c73a36923ed5abfd673da6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08493c1e001d85731cb4863ec38857fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f064ba4502a9845a3f06835514f5a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)设以原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8961b74ace912806f3c6af8ceaf5cfec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f0e6d3115e900f1a359ec4f894e8896.png)
您最近一年使用:0次