解题方法
1 . 如图,在棱长为1的正方体
中,
,
分别是棱
,
上的动点,且
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/13/16cbb273-5418-42be-a260-ab7402921fd3.png?resizew=166)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6efb5e820ddc8c575f1a974b709551bf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/13/16cbb273-5418-42be-a260-ab7402921fd3.png?resizew=166)
A.![]() |
B.![]() |
C.存在无数条直线与直线![]() ![]() ![]() |
D.当三棱锥![]() ![]() ![]() |
您最近一年使用:0次
解题方法
2 . 已知函数
.
(1)试求函数
的极值;
(2)若存在实数
使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c07123ac8a795469c83fb5619c2363b.png)
(1)试求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/238252d27fd04fa32efbd2e2159d5696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
名校
解题方法
3 . 已知抛物线
,其焦点为
,定点
,过
的直线
与抛物线
相交于
,
两点,当
的斜率为1时,
的面积为2.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/11/3aad966c-def1-42af-b9bd-fb59bde895fb.png?resizew=132)
(1)求抛物线的标准方程;
(2)若抛物线在
,
点处的切线分别为
,
,且
,
相交于点
,求
距离的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ab7408ffcefcb8e5e1ad4a9c58f1b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c59f0e35b7ae5206e45878934482b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a33181b27b10690b4913595f8c1f46e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/11/3aad966c-def1-42af-b9bd-fb59bde895fb.png?resizew=132)
(1)求抛物线的标准方程;
(2)若抛物线在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
您最近一年使用:0次
2023-05-11更新
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523次组卷
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3卷引用:安徽省铜陵市2023届高三三模数学试题(新课标老高考)
安徽省铜陵市2023届高三三模数学试题(新课标老高考)四川省绵阳市南山中学实验学校2024届高三上学期1月月考数学(理)试题(已下线)第五篇 向量与几何 专题4 极点与极线 微点4 极点与极线问题常见模型总结(二)