解题方法
1 . 已知函数
.
(1)证明:
时,
恒成立;
(2)证明:
(
且
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a4dd4be1e37768f832d1e9b9380e779.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6551d7315962759f2b0693b475fd9bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930bc56406e69b785b37a83d48e36724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
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2024-04-30更新
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1482次组卷
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5卷引用:陕西省汉中市2023-2024学年高三下学期教学质量第二次检测理科数学试卷
陕西省汉中市2023-2024学年高三下学期教学质量第二次检测理科数学试卷陕西省汉中市2023-2024学年高三下学期教学质量第二次检测文科数学试卷(已下线)模块五 专题3 全真能力模拟3(人教B版高二期中研习)(已下线)专题1 数列不等式 与导数结合 讲(经典好题母题)(已下线)模块一 专题6 导数在不等式中的应用B提升卷(高二人教B版)
2 . 如图,四边形
满足
于点
,
于
,
为
的垂心.求证:
,
,
三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33c69cd80e6948a8eab58c48d56c17d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1ff7bf8ffc8a04186e3e13c1a6d5ced.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/24/0bedbe57-3f14-40cd-90ac-36988faff549.png?resizew=163)
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3 . 已知函数
,其中
为自然对数的底数.
(1)当
时,若关于x的方程
恰有两解,求实数k的取值范围;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40b556f4d0aa3973d02a569e3e6e5bf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797bbd18359c9a29842b39109b3a0aac.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79fcfef29b3b95577ccb4071c64f7c56.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc52b04670f117b0d2d5e8cc75052dd9.png)
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解题方法
4 . 数学家Geminad Dandelin用一平面截圆锥后,在圆锥内放两个大小不同的小球,使得它们分别与圆锥侧面、截面相切,就可证明图中平面截圆锥得到的截面是椭圆(如图称为丹德林双球模型).若圆锥的轴截面为正三角形,则用与圆锥的轴成
角的平面截圆锥所得椭圆的离心率为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
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解题方法
5 . 已知函数
.
(1)求函数
在点
处的切线方程;
(2)求函数
的最小值;
(3)函数
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e426f7804ba33a506c8645404cdb95c.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d06e33d079ac1649ee5eea8f61de7cf.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
(3)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6289962049a906dde1d22ecfc989813c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcfd640a0bc9642cfecddaab6d593a10.png)
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6 . 甲乙两人进行投篮比赛,两人各投一次为一轮比赛,约定如下规则:如果在一轮比赛中一人投进,另一人没投进,则投进者得1分,没进者得-1分,如果一轮比赛中两人都投进或都没投进,则都得0分,当两人各自累计总分相差4分时比赛结束,得分高者获胜.在每次投球中甲投进的概率为0.5,乙投进的概率为0.6,每次投球都是相互独立的.
(1)若两人起始分都为0分,求恰好经过4轮比赛,甲获胜的概率.
(2)若规定两人起始分都为2分,记
(
)为甲累计总分为i时,甲最终获胜的概率,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a0d18ef9cb9aa07db578b1bbb059068.png)
①求证
(
)为等比数列
②求
的值.
(1)若两人起始分都为0分,求恰好经过4轮比赛,甲获胜的概率.
(2)若规定两人起始分都为2分,记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f41a845f0d23659d93d6712774ccd09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9fe95e44063bb75f163206c17eaa8b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a0d18ef9cb9aa07db578b1bbb059068.png)
①求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/332ef968df2c6e9ed31a926e275adcb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91ca738a745d910c37350fd771c6bb50.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bea0dd7e474bcd04db2544427ba0488.png)
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解题方法
7 . 设
,
为椭圆
的左、右两个焦点,
为椭圆上一点,且
,
.
(1)求
的值;
(2)若直线
:
与椭圆
交于
,
两点,线段
的垂直平分线经过点
,证明:
为定值.
![](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/fed221e4955e7b39e7245c3ecd0080c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2dfb22c6f1c155747100e7536cd1abd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271fb7c2a4bb1d9655e992696ba05eb6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a5464dc3bd349a216296fbaa879ae47.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/b758968a87b77e9aa3a93f4127375df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0768b08cf65b6e006e36a5d48c3f8253.png)
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名校
8 . 一动圆圆E与圆
外切,同时与圆
内切.
(1)求动圆圆心E的轨迹方程;
(2)设A为E的右顶点,若直线
与x轴交于点M,与E相交于点B,C(点B在点M,C之间),若N为线段
上的点,且满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f518c9fc2dacbf894182827198b1ac09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a22d893a5ea8802c545df528d6278eba.png)
(1)求动圆圆心E的轨迹方程;
(2)设A为E的右顶点,若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/972c0a709b5da9da4241971c468dcb54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a81c7bff1585e43eb422287e0a8f258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff6689d2a34aba1b9215a83785d7b3a.png)
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名校
解题方法
9 . 已知函数
是定义在R上的奇函数,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bffac8a5a466e952c53225fcdc795f9.png)
(1)求
的解析式;
(2)用定义证明
在
上是增函数;
(3)设
,当
时,试求函数
的最大值
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0968841c3b9731f5fe1308f9dc7c5023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bffac8a5a466e952c53225fcdc795f9.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)用定义证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455ba3d3e46977fcbe5b71f8bb9df4be.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a49935236b13167959c3d07f85e098fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6343069217cd6d8dd32446da428dae46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8413e920cf1bfa9d49cb1115255f2e4.png)
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2024·全国·模拟预测
解题方法
10 . 已知函数
.
(1)若函数
有两个极值点,求
的取值范围;
(2)若曲线
在点
处的切线与
轴垂直,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5841c44d1451e313d9d4080e339cf543.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c956fcfa2be20b1d06ec52e0c4eb686.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fef581fd0f107b3ac5c361a2cfbbbec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ab95ade84d3fc6cfbd667dbe59acbbd.png)
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