1 . 已知椭圆
,
、
为它的左、右焦点,
为椭圆上一点,已知
,
,且椭圆的离心率为
.
(1)求椭圆方程;
(2)已知
,过
的直线与椭圆交于
、
两点,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2acf346b48da90681047219365a72c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d124b231bf2cd3746f35e6c68cd7178f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c74d0762a41833c281207a7e180f0d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求椭圆方程;
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c51c6a22ed5c74758aa9c32b0a613be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.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/094178ad07dffcab850c964fd3b51b6c.png)
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解题方法
2 . 已知椭圆C:
+
=1(a>b>0)的短轴长为2,且椭圆C的顶点在圆M:x2+
2=
上.
(1)求椭圆C的方程;
(2)过椭圆的上焦点作相互垂直的弦AB,CD,求|AB|+|CD|的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae2ab50ebf59903fd01c506cc238e98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be773167be3ff7ec4fb4a7252dc64283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d56c1daae9857d00e2c3a1b700410bf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求椭圆C的方程;
(2)过椭圆的上焦点作相互垂直的弦AB,CD,求|AB|+|CD|的最小值.
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2020-01-21更新
|
463次组卷
|
7卷引用:山西省实验中学2017届高三下学期模拟热身数学(文)试题
山西省实验中学2017届高三下学期模拟热身数学(文)试题【全国百强校】内蒙古赤峰二中2019届高三上学期第三次月考数学(文)试题河北省武邑中学2019届高三上学期期中考试数学(理)试题【市级联考】河南省驻马店市2018-2019学年高二第一学期期终考试数学(理)试题(已下线)专题9.9 圆锥曲线的综合问题(练)【理】-《2020年高考一轮复习讲练测》(已下线)考点63 直线与圆锥曲线的位置关系-备战2022年高考数学一轮复习考点帮(新高考地区专用)【学科网名师堂】(已下线)第63讲 直线与圆锥曲线
3 . 已知函数
满足
,当
时,
,设
,若方程
在
上有且仅有3个实数解,则实数
的取值范围是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7478369f8a8af668f9f7acebd4e7cc32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcac1e85463a3177f487d896b3d1d24c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a903745cd2cb536443d07579b606ece5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab6b28c29a9e823cf1d6c764323d7e15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0c8f0fef6492d4037130097569166eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20082e474b757273b4b83b13f16ddb61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2018-01-11更新
|
817次组卷
|
4卷引用:山西省河津三中2018届高三一轮复习阶段性测评理数试卷
山西省河津三中2018届高三一轮复习阶段性测评理数试卷山西省45校2018届高三第一次联考理数试卷黑龙江省齐齐哈尔市实验中学2018届高三上学期期中考试数学(理)试题(已下线)专题08 导数及其应用(练习)-1
4 . 已知函数
.
(1)讨论
在
上的单调性;
(2)是否存在实数
,使得
在
上的最大值为
,若存在,求满足条件的
的个数;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13ac34a623d6070ea98471ecfc1feeab.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d6243e93c41978871cb23d8e66148d.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89799046dbba39651f4a93a4e2491961.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
5 . 已知函数
,
.
(1)当
时,比较
与
的大小;
(2)设
,若函数
在
上的最小值为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64263fe2ca48e694c87496d61e63fb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cdb5f2195549cf8ef0ef396dad48517.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e205a7dc01a9e0bd2a8cb8bb1cc8ef0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/322a00c551f56405c5ce86af4bf1c232.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f687bffdf3c157729d5d98c113f909.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d8423ce8cf2b05f36f65f59e2cf1a5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc5aea4d6ce0d4ffd1df735b81ac5905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2017-12-06更新
|
571次组卷
|
6卷引用:山西省榆社中学2018届高三11月月考数学(理)试题
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6 . 已知定义域为
的函数
存在两个零点.
(1)求实数
的取值范围;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d6243e93c41978871cb23d8e66148d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1aaeabb8d6db336c51c6a53c0e7870c1.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1faac6ad4976499470021a35f980fb47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d421e30f2bc0ed574fc35910c503ba.png)
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2017-10-17更新
|
908次组卷
|
2卷引用:山西省河津三中2018届高三一轮复习阶段性测评理数试卷
名校
7 . 已知函数
.
(1)讨论函数
在区间
上的单调性;
(2)已知函数
,若
,且函数
在区间
内有零点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b87b020440047d9f6bbfa44628b55da5.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c628d66bd0a68bcd38dd3c358ea0ab7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46220bd7f8e6790d41a9ecbd581a3c9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/856a2d621986dd4ffc42b4dd2810b27a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2017-08-26更新
|
1836次组卷
|
8卷引用:山西省孝义市2018届高三上学期入学摸底考试数学(理)试题
名校
8 . 设函数
,其中
是自然对数的底数.
(1)若
在
上为单调函数,求实数
的取值范围;
(2)若
,求证:
有唯一零点的充要条件是
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65762da93a6643d2fb0dc3c892feb61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b7393fc425948d4261bb6c7d67f88e1.png)
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9 . 已知函数
.
(1)求过点
且与曲线
相切的直线方程;
(2)设
,其中a为非零实数,若
有两个极值点
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bee1dcc2a471ac89dd3cec62e77f6ff9.png)
(1)求过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2a5e336b6bcba6354fd366c892dd06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d836280b3e758c30cbd7e8a5b7fbf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f786a5701dc1a8a015e8843c3360151b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9387c3b3079c432e3845c60466fe0921.png)
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解题方法
10 . 已知函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be81134385e323490af87dfc2a29193e.png)
.
(1)求函数
的极值;
(2)当
时,若存在实数
,
使得不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e7c7debdf9905b44ff41d808a09d1ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be81134385e323490af87dfc2a29193e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1a1a5f2533b8ea54b7022383f875666.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bca4be345087f993a4078e16c16608e2.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8a725d126ea46b61280a23722f49e71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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