1 . 已知函数
,
是常数且
.
(1)若曲线
在
处的切线经过点
,求
的值;
(2)若
(
是自然对数的底数),试证明:①函数
有两个零点,②函数
的两个零点
满足
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d827f87e10a7848797480161dcf3cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6554ac3dff4a59833e407db887f6e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f2e8dcd48e0bf8a767ef5cd3532c931.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39a533560863efecd642f0476fe8a38.png)
您最近一年使用:0次
2018-12-18更新
|
617次组卷
|
2卷引用:【市级联考】广东省江门市普通高中2018届高三调研测试理科数学试题
2 . 已知函数
(
是自然对数的底数),
,
是常数且
.
(1)若
是曲线
的一条切线,求
的值;
(2)若
在
时恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae9de719dcc4468ca5b923581a63a0c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c14983bc2592cc5572d050e364668b90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65f1bcf110c36fea39bd22e435e8c6a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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3 . 过抛物线
的焦点
的直线交抛物线
于两点
,线段
的中点为
.
(1)求动点
的轨迹
的方程;
(2)经过坐标原点
的直线
与轨迹
交于
两点,与抛物线
交于
点(
),若
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8c8c7bd19d1b100207362ac9933f042.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0d0d6263a110ba78c04e523a8e38f70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5425108c557f0f21474c045334f97d9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a949c00526fddf435423272cf10f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(2)经过坐标原点
![](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/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0d0d6263a110ba78c04e523a8e38f70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/217f40c9c2d995a6bab275854ee3c10b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b044f3288bc76404b4d7eb4aafbcd50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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4 . 已知双曲线
的一个顶点为
,一个焦点为
,过
作垂直于实轴的直线交双曲线于
是坐标原点,若
成等比数列,则双曲线的离心率![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ce2b47812fce4b17fd813d0e4cce21.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd36104c7358ec5d86aa50b4b035642a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca85cba1fa34efecbba45500037d77ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ce2b47812fce4b17fd813d0e4cce21.png)
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5 . 已知命题
,
,则命题![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99e600d9843ce406c441b402837d0388.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75c19112349362457b96616142e6147c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e978d5fd7ef921a2ae4cb09a071dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99e600d9843ce406c441b402837d0388.png)
您最近一年使用:0次
6 . “
”是“椭圆
的焦距为8”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b3627b9dacb91440134a9a9136af33.png)
A.充分不必要条件 | B.必要不充分条件 | C.充要条件 | D.既不充分也不必要 |
您最近一年使用:0次
2018-12-18更新
|
1660次组卷
|
5卷引用:【市级联考】广东省江门市普通高中2019届高三调研测试文科数学试题A卷
【市级联考】广东省江门市普通高中2019届高三调研测试文科数学试题A卷湖南省湘西州2018-2019学年高二上学期期末数学(理)试题湖南省湘西州2019-2020学年高二上学期期末数学(理)试题(已下线)3.1.2 椭圆的简单几何性质(1)-2020-2021学年高二数学课时同步练(人教A版选择性必修第一册)甘肃省白银市第十中学2020-2021学年高二12月月考数学(文)试题
名校
7 . 已知命题
,
.则命题
的否定
为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9c4671757cebfbd8e17546ef5e64a8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7c8f1e5b06d5a400c9de648760b513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2018-06-23更新
|
214次组卷
|
3卷引用:广东省江门市2018届高三3月模拟(一模)考试数学理试题
8 . 已知命题p:;命题q:
则下列判断正确的是( )
A.![]() | B.q是假命题 |
C.![]() | D.![]() |
您最近一年使用:0次
2018-04-17更新
|
464次组卷
|
2卷引用:2020届广东省江门市高三下学期4月模拟数学(理)试题
9 . 在平面直角坐标系
中,已知点
,
,动点
不在
轴上,直线
、
的斜率之积
.
(Ⅰ)求动点
的轨迹方程;
(Ⅱ)经过点
的两直线与动点
的轨迹分别相交于
、
两点.是否存在常数
,使得任意满足
的直线
恒过线段
的中点?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4efba45ee010b78ca1a204dc1caeb044.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eaa8d348b5b8108877383f48a874646.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/346c0ff07b0cc9fac50c93ccc9bea549.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af6189353f8fc314eb4cc8ef3120974e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0a06e309180ffcb242f42db0a65dcc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80672dda9430cb42b3136bcb1b67bbad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4b7fb227bade3360ccadddaf1142644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2407d29622e4ff3501d2b69a783b550e.png)
(Ⅰ)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce9a256fae63404bd6b5cf9dcd1051cf.png)
(Ⅱ)经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c2bb7be2e9410a16502268fd4c67be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce9a256fae63404bd6b5cf9dcd1051cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8f1796428c2600bbbdff746b0311583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d765b1a42d28ace4726c9c8ae6af56f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d18a9a90fef7dc8f263f93f1112803c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9884578b215d3bb31f94f02cfbeff32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f24ef73daec56bee2ec114668a26193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13445dff9cd2ae715754e23451cfcafe.png)
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10 .
、
是抛物线
上关于直线
对称的两点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/334781c7fe448516f45ee4da928b9dea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d8c80f9e6851c492ab8b4279bd710b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fda12d379c3c68222242a3738bcd4a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9524f3754b08bd5d53c9ad4778da3c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/334781c7fe448516f45ee4da928b9dea.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次