解题方法
1 . 已知正数a,b满足
;
(1)求ab的最大值;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a0d34836cf6d21bcadd4f60793ba150.png)
(1)求ab的最大值;
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/296a77a7ca3e70fba643654bf5a99a3b.png)
您最近一年使用:0次
2023-10-12更新
|
353次组卷
|
5卷引用:内蒙古自治区呼和浩特市内蒙古师范大学附属第二中学2023-2024学年高一上学期10月月考数学试题
解题方法
2 . 已知椭圆方程为
,射线
与椭圆的交点为
,过
作倾斜角互补的两条直线,分别与椭圆交于
两点(异于
).
(1)求证直线
的斜率为定值;
(2)求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c46ab26e2d950296e9edb81bb20bdcff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ef578ffbdec208fba7f83005ac7633f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)求证直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b3fd448d8ccc7d9aed59605bba842e2.png)
您最近一年使用:0次
3 . 已知函数
,
.
(1)若
,不等式
恒成立,求实数
的取值范围;
(2)设
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15ac12e3a97660c2807636c20dd9d020.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1c004a2255e619d8a7bee7740a294c5.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e68a83b4093280ea8750677f6828bf47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/362b8505c76739ace94f4c886ed52e8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7dbc702617c765a573961953cc0901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c46ec1f0c447b8610155f365d2c0011d.png)
您最近一年使用:0次
2019-04-30更新
|
442次组卷
|
2卷引用:【市级联考】内蒙古赤峰市2019届高三4月模拟考试数学(理)试题