1 . 设直线
,曲线
.若直线
与曲线
同时满足下列两个条件:①直线
与曲线
相切且至少有两个切点;②对任意
都有
.则称直线
为曲线
的“上夹线”.
(1)已知函数
.求证:
为曲线
的“上夹线”;
(2)观察下图:
的“上夹线”的方程,并给出证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70087bf78bee970f6ecf583ca1fccc42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0016d106579d6b26cf2960cf744f317.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d9dc155203792c9983b2118b7730088.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
(1)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c043c3bf7b638f8bb635ee098130560.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c31c4f39399ec245a67db2933ed639f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)观察下图:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d08fe48eafb7a58cb673cc4bce2aa0e7.png)
您最近一年使用:0次
名校
解题方法
2 . 已知函数
,
.
(1)若
,求
的取值范围;
(2)求证:
存在唯一极大值点
,且知
;
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05f035e42df8f6be20fe99d36245395d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beca3a6d6b6f5dbad1d6466c1d3a60b7.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8559250e7a91f36fe7a8ec6ce6a1550f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c28ef59d2079f8779315c30f0e45bf9.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dddca059c0e724cff370b46d578ec74.png)
您最近一年使用:0次
2021-10-24更新
|
1342次组卷
|
4卷引用:重庆市巴蜀中学2022届高三上学期高考适应性月考(三)数学试题
重庆市巴蜀中学2022届高三上学期高考适应性月考(三)数学试题重庆市育才中学校2023届高三上学期期中数学试题(已下线)第六章 导数与不等式恒成立问题 专题一 两类经典不等式 微点2 两个重要的对数不等式天津市河西区2024届高三下学期第一次质量调查数学试题
解题方法
3 . 已知抛物线
的焦点是
,如图,过点
作抛物线
的两条切线,切点分别是
和
,线段
的中点为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/1dbb8993-f12e-48d2-9b83-87ab468913cb.png?resizew=189)
(1)求抛物线
的标准方程;
(2)求证:直线
轴;
(3)以线段
为直径作圆,交直线
于
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07996498447064865ea5301b41679cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ee74d649e1014da6fe65739fc2d9dcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/1dbb8993-f12e-48d2-9b83-87ab468913cb.png?resizew=189)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97b29c85d254553e5a3704cea48de311.png)
(3)以线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e2c0d4ac2bd79f6cea7a9b1a50662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca75dd85255d6de2d4c8917a7239937c.png)
您最近一年使用:0次
2022-01-03更新
|
913次组卷
|
3卷引用:浙江省绍兴市诸暨市海亮高级中学2021-2022学年高三上学期12月选考数学试题
浙江省绍兴市诸暨市海亮高级中学2021-2022学年高三上学期12月选考数学试题浙江省绍兴市诸暨市海亮高级中学2022届高三下学期高考前最后一卷数学试题(已下线)第11讲 高考难点突破三:圆锥曲线的综合问题(最值、范围问题) (精讲)
名校
解题方法
4 . 一种卫星接收天线如图1所示,其曲面与轴截面的交线为抛物线.卫星发射的信号波束到达后,在轴截面内呈近似平行状态射入,经反射聚集到焦点处,从而位于焦点处的信号接收器可以接受到较强的信号波.已知接收天线的口径(直径)为4米,深度为1米.根据图2中的坐标系,解答下列问题:
![](https://img.xkw.com/dksih/QBM/2022/3/10/2933292230918144/2948224848240640/STEM/e3712024-5cf9-43fc-93c5-e9ac525184da.png?resizew=296)
(1)求接收器与顶点间的距离;
(2)证明一卫星信号波沿着平行于对称轴方向射入,经过抛物线上的点M(不同于抛物线顶点)反射后经过焦点F.
![](https://img.xkw.com/dksih/QBM/2022/3/10/2933292230918144/2948224848240640/STEM/e3712024-5cf9-43fc-93c5-e9ac525184da.png?resizew=296)
(1)求接收器与顶点间的距离;
(2)证明一卫星信号波沿着平行于对称轴方向射入,经过抛物线上的点M(不同于抛物线顶点)反射后经过焦点F.
您最近一年使用:0次
2022-03-31更新
|
220次组卷
|
2卷引用:江苏省苏州市昆山市七校2021-2022学年高二上学期12月联考数学试题
名校
解题方法
5 . 设常数
且
,椭圆
:
,点
是
上的动点.
(1)若点
的坐标为
,求
的焦点坐标;
(2)设
,若定点
的坐标为
,求
的最大值与最小值;
(3)设
,若
上的另一动点
满足
(
为坐标原点),求证:
到直线PQ的距离是定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060e7930731eddbcfac592b808e9b698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35876366f005b3078d9e66ea7eab65d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab8a0cc6504aa4c3a38006f5394b4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab8a0cc6504aa4c3a38006f5394b4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d063ec7f9dbeba72fabf4437f9400e07.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8493a0cd10d3d0399173c04163740a38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7df99fe6438442a9453fc0c57fb703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
您最近一年使用:0次
2021-12-23更新
|
924次组卷
|
6卷引用:上海市黄浦区2022届高三上学期一模数学试题
(已下线)上海市黄浦区2022届高三上学期一模数学试题上海市黄浦区2022届高三一模数学试题(已下线)专题10.3—圆锥曲线—椭圆大题(定值问题)—2022届高三数学一轮复习精讲精练上海市崇明中学2021-2022学年高二下学期期中数学试题(已下线)押全国卷(理科)第20题 圆锥曲线-备战2022年高考数学(理)临考题号押题(全国卷)上海市嘉定区第二中学2022-2023学年高二上学期期中数学试题
名校
6 . 对于定义在D上的函数
,其导函数为
.若存在
,使得
,且
是函数
的极值点,则称函数
为“极致k函数”.
(1)设函数
,其中
,
.
①若
是单调函数,求实数a的取值范围;
②证明:函数
不是“极致0函数”.
(2)对任意
,证明:函数
是“极致0函数”.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7807143d8a2929459b46063519843f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0da9fd5dfe735b958eb002702baa2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48196cf98394fcbce4181c33754141dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/375a66a688f4a9133fde13d212901c32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bffdee54569b89c743b86a90f28b93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
②证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725a89d93c791f7a0098f4964587905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bc26fdf6289ac213b712cc32619e1e2.png)
您最近一年使用:0次
2021-11-04更新
|
973次组卷
|
6卷引用:北师大版(2019) 选修第二册 突围者 第二章 第六节 课时2 函数的极值
北师大版(2019) 选修第二册 突围者 第二章 第六节 课时2 函数的极值上海市建平中学2021-2022学年高二下学期期末数学试题(已下线)重难点04导数的应用六种解法(2)辽宁省部分学校2024届高三上学期期末数学试题(已下线)上海市高二下学期期末真题必刷04(压轴题)--高二期末考点大串讲(沪教版2020选修)(已下线)拔高点突破05 函数与导数背景下的新定义压轴解答题(九大题型)
名校
7 . 设
,求证:“
是偶数”是“
是奇数”的充要条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f02d5c8eec434a3f90348d770a2e2b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a00470075ebfa218745e54f7521ba839.png)
您最近一年使用:0次
解题方法
8 . 设函数
.
(1)若
为单调递增函数,求
的值;
(2)当
时,直线
与曲线
相切,求
的取值范围;
(3)若
的值域为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b23fd3528abd567636055e2193046d0c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1eaf48f1ad368af0b0961322e50d74e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac02a054bd0771a56987af33454baaea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d31f9ce464f2ce3b24833b70595941c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b029e85e686623cdef977b2cb1f207a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19e9454e1c89d09cb8e1fbd628ae2cbb.png)
您最近一年使用:0次
9 . (1)证明:对任意的
,
,不等式
恒成立.
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/404202ec4cd0d2fd0e0f677663844524.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4bac6cd9de546c22eedf2df5b930edf.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df475ac512684790cda1affd2642eaae.png)
您最近一年使用:0次
解题方法
10 . 直线
交
轴于点
,交椭圆上
(
)于相异两点
,
,且
.
(1)求
的取值范围;
(2)将弦
绕点
旋转
得到线段
,设点
的坐标为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ab466aedd6e176088d8dee7bc3e3aaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/664dd75ac186f08df210f40d98355711.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)将弦
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54e7a123c9cc0e058db28841fb0edcf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba7204f43679af6935e494c59d40c6ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffef5fb614a2b2a033451b523a21ac3.png)
您最近一年使用:0次