名校
1 . 已知函数
.
(1)求函数
的单调区间和极值;
(2)当
时,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b100ea6efff74c80bbfedbeae2d39d.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b221c5eee4f9dd6b5c95a9f7f8ecb2d.png)
您最近一年使用:0次
2022-02-15更新
|
803次组卷
|
3卷引用:山西省吕梁市2022届高三上学期第一次模拟数学(文)试题
解题方法
2 . 已知椭圆
的离心率为
,且过点
.
(1)求椭圆
的方程;
(2)斜率为
的直线
交椭圆
于
两点(不同于点
),记直线
的斜率分别为
,证明:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/508780b17f67b38a47e03dc15795cc0d.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.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/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9bd788d2944327dd8d25047a08eea54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4757181824e15e0f21e5bdd55448783.png)
您最近一年使用:0次
3 . 已知函数
.
(1)求
的单调区间;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ad29c3bbc2b6a22bb131fb7d7756e93.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee3ba3c6c0f471b8151458003d6f502.png)
您最近一年使用:0次
2022-05-21更新
|
1047次组卷
|
3卷引用:山西省吕梁市2022届高三三模理科数学试题
名校
解题方法
4 . 已知椭圆
:
过点
,过右焦点
作
轴的垂线交椭圆于
,
两点,且
.
(1)求椭圆
的标准方程;
(2)点
,
在椭圆
上,且
.证明:直线
恒过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c179fe7eff7abfdd092b63c9c1b82d0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/512fb5338ab8fb9def37bbb4dd5592d7.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05c42f1a6facd7d4056aedb03fc9ce2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
您最近一年使用:0次
2022-05-09更新
|
610次组卷
|
5卷引用:山西省晋中市2022届高三下学期5月模拟数学(文)试题
山西省晋中市2022届高三下学期5月模拟数学(文)试题山西省怀仁市第一中学校2022届高三下学期第四次模拟数学(文)试题(已下线)2022年全国高考乙卷数学(文)试题变式题13-16题(已下线)2022年全国高考乙卷数学(文)试题变式题21-23题(已下线)模型6 非对称结构和齐次化处理问题模型
5 . 已知椭圆
:
过点
,过右焦点
作
轴的垂线交椭圆于M,N两点,且
.
(1)求椭圆
的方程;
(2)点P,Q在椭圆
上,且
,
,D为垂足.证明:存在定点
,使得
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c179fe7eff7abfdd092b63c9c1b82d0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/512fb5338ab8fb9def37bbb4dd5592d7.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)点P,Q在椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05c42f1a6facd7d4056aedb03fc9ce2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b182ff664d8ed9d0c518dbbf98ef10f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97819c1a707d1a4555600b0282eb0555.png)
您最近一年使用:0次
2022-05-10更新
|
460次组卷
|
3卷引用:山西省晋中市2022届高三下学期5月模拟数学(理科)试题
6 . 已知函数
.
(1)若曲线
在
处的切线经过第二、四象限且与坐标轴围成的三角形的面积为
,求a的值.
(2)证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6397d032f9a9430082b01a74ed5e9df9.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3897bf276a0b6c2121917d39b369df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ede78fd7ac619ea597856254bb5d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19cbe3e25f5317977dad0604d7cdf1cd.png)
您最近一年使用:0次
2022-05-09更新
|
576次组卷
|
6卷引用:山西省晋城市2022届高三第三次模拟文科数学试题
名校
解题方法
7 . 已知函数
.
(1)当
时,
,求a的取值范围;
(2)若
在
时有两个极值点
,证明:
①
;
②
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32135132dd7339b10c33a9773ffee6a5.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0e644ef438477690e46d02e6a0b7c89.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ca13a93b5f401c0d39ba52b0cffcb0.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f658273b223ed4be2d0ec27d8ca9f89.png)
您最近一年使用:0次
2022-05-01更新
|
649次组卷
|
2卷引用:山西省太原市2022届高三二模数学(理)试题
名校
解题方法
8 . 已知椭圆
(
)的离心率为
,其右焦点为F,点
,且
.
(1)求C的方程;
(2)过点P且斜率为
(
)的直线l与椭圆C交于A、B两点,过A、B分别作y轴的垂线,垂足为M、N,直线AN与直线
交于点E,证明:B、M、E三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d72a07a4e5acfc140a3cea1f26b951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1b6f209d1a805437046ca6ef79dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08347926757f4a72716c7ade83f3c01e.png)
(1)求C的方程;
(2)过点P且斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2c80c26a794a844127aae7dee87c93b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9355031ea0b2dc9cef3777621bc6d38.png)
您最近一年使用:0次
2022-04-29更新
|
0次组卷
|
5卷引用:山西省山西大学附属中学校2022届高三三模(总第七次模块)文科数学试题
解题方法
9 . 已知函数f(x)=ln x+ax2-x.
(1)若a=-1,求函数f(x)的极值;
(2)设f′(x)为f(x)的导函数,若x1,x2是函数f′(x)的两个不相等的零点,求证:f(x1)+f(x2)<x1+x2-5.
(1)若a=-1,求函数f(x)的极值;
(2)设f′(x)为f(x)的导函数,若x1,x2是函数f′(x)的两个不相等的零点,求证:f(x1)+f(x2)<x1+x2-5.
您最近一年使用:0次
解题方法
10 . 已知抛物线
的焦点为F,其准线与x轴交于点P,过点P作直线
与C交于A,B两点,点D与点A关于x轴对称.
(1)证明:直线
过点F;
(2)若
,求l的斜率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(1)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08fa88680cd34e3424b4ff02f1b08073.png)
您最近一年使用:0次