名校
解题方法
1 . 已知函数
(
且
),若
,
是假命题,则实数a的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2fce82d8b7bf78e4325fbfab8fc5f2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37681b22f24c571f1a8e5ec2bfaa0e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b0858003218792d1824757534478b8c.png)
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2023-09-27更新
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1371次组卷
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7卷引用:高一数学上学期期中考试模拟卷
(已下线)高一数学上学期期中考试模拟卷湖南省邵阳市第二中学2023-2024学年高一上学期基础知识竞赛数学试题河北省尚义县第一中学等校2024届高三上学期9月联考数学试题重庆市北碚区西南大学附属中学校2024届高三上学期11月期中数学试题(已下线)北京市第四中学2024届高三上学期10月月考数学试题变式题11-15安徽省江南十校2024届高三联考信息卷数学模拟预测卷(一)(已下线)专题11 不等式恒成立、能成立、恰好成立问题(过关集训)
名校
解题方法
2 . 已知椭圆
,直线
不过原点
且不平行于坐标轴,
与
有两个交点
,
,线段
的中点为
.证明:
(
)直线
的斜率与
的斜率的乘积为定值
.
(
)若
过点
,延长线段
与
交于点
,当四边形
为平行四边形时,则直线
的斜率
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ce159f327425b6e1cc1334877eb6f0.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f950f722a326aa7e191828f1373284.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/226c5e4b7d65043ee34efa4b56f210ef.png)
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