名校
解题方法
1 . 已知抛物线
,直线
与抛物线交于
两点,与圆
交于
两点
在第一象限
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d55d971b32a5fccca211efac5fa161f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a8d6991873e79b298984a95b8954b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65436512ecbaefba4ac8123c55094211.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4b587baa863a7feff0a103f912cedb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/476b4a56e64f1d0521aed28001607b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ed7bdf2cc82271e3c7a04c96227d3c.png)
您最近一年使用:0次
2023-12-24更新
|
452次组卷
|
4卷引用:安徽省淮北市第一中学2023-2024学年高二上学期第三次月考数学试题
解题方法
2 . 若正实数
满足
,记
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a14c388e1e2e5a2ff1ccf6caffbee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99edc434eec262fd34028e0140ccf1dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/367982ba4a07227bf8cfe640cea42d78.png)
A.![]() |
B.当![]() ![]() ![]() |
C.当![]() ![]() ![]() |
D.当![]() ![]() |
您最近一年使用:0次
解题方法
3 . 设
,
,满足
,则下列说法正确的是( )
![](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/fd98ce07e05c58d83a48d90dfcb28fd2.png)
A.![]() ![]() | B.![]() |
C.![]() ![]() | D.![]() |
您最近一年使用:0次
2023-12-22更新
|
305次组卷
|
2卷引用:安徽省“皖江名校联盟”2024届高三上学期12月月考数学试题
解题方法
4 . 某乡镇响应“打造生态旅游”的号召,因地制宜的将该镇打造成“生态水果特色小镇”.经调研发现:某珍惜水果树的单株产量
(单位:千克)与施用肥料
(单位:千克)满足如下关系:
,肥料成本投入为
元,其它成本投入(如培育管理、施肥等人工费)
元.已知这种水果的市场售价大约21元/千克,且销售畅通供不应求,记该水果单株利润为
(单位:元)
(1)写出单株利润
(元)关于施用肥料
(千克)的关系式;
(2)当施用肥料为多少千克时,该水果单株利润最大?最大利润是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4216116b568e132662997987341c606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b395a824c8962e50ea8dd950d83970f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e23b020e028ba9aee9547e77eaca05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)写出单株利润
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)当施用肥料为多少千克时,该水果单株利润最大?最大利润是多少?
您最近一年使用:0次
解题方法
5 . 若
对
恒成立,则
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b66f7eece93e940c5b4dfd371e0add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f25ca6ba3b1abc3443093f32360d1b.png)
您最近一年使用:0次
解题方法
6 . 已知正数
,
满足
,则( )
![](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/4dabbe5f94d1dae88587cabc1afbd429.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() |
您最近一年使用:0次
名校
7 . “绿水青山就是金山银山”,为了贯彻落实习近平生态文明思想,探索促进“绿水青山”向“金山银山”转变的重大实践,某地林业局准备围建一个矩形场地,建立绿化生态系统研究片区,观察某种绿化植物.如图所示,两块完全相同的矩形种植绿草坪,草坪周围(阴影部分)均种植宽度相同的花,已知两块矩形绿草坪的面积均为
平方米,共
平方米.
![](https://img.xkw.com/dksih/QBM/2023/12/19/3392568616009728/3392634341875712/STEM/79c0b178f11d4cc9bf89181dab7d50f8.png?resizew=129)
(1)若矩形草坪的长比宽至少多
米,求草坪宽的最大值;
(2)若草坪四周的花坛宽度均为
米,求整个绿化面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b685c556cc423e4833c1dc671a134cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98ac61206cb12cf6686bb0facf635010.png)
![](https://img.xkw.com/dksih/QBM/2023/12/19/3392568616009728/3392634341875712/STEM/79c0b178f11d4cc9bf89181dab7d50f8.png?resizew=129)
(1)若矩形草坪的长比宽至少多
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
(2)若草坪四周的花坛宽度均为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
您最近一年使用:0次
解题方法
8 . 已知
,
,且满足
,则以下结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc65d6eb9b63f96d80b54ec9893aee8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/131ac7eb1e911c9a40e84235bf3742ed.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
名校
9 . 已知正实数
满足
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b374b0017f5b78a0d77c5480673066e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/597a2383f6c49babe27156d08d28b2eb.png)
A.8 | B.4 | C.2 | D.1 |
您最近一年使用:0次
解题方法
10 . 设
为实数,直线
.
(1)求证:不论
为何值,直线必过定点
,并求出定点
的坐标;
(2)过点
引直线
,使它与两坐标轴的正半轴的截距之和最小,求
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61fbd2f04e1d6ffab5d2ba2ee7dc0497.png)
(1)求证:不论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
您最近一年使用:0次
2023-12-18更新
|
248次组卷
|
2卷引用:安徽省合肥市庐江县2023-2024学年高二上学期第二次集体练习数学试题