解题方法
1 . 已知函数
,
为
的导函数.
(1)当
时,求曲线
在点
处的切线方程;
(2)当
时,求函数
的单调区间和极值;
(3)当
时,求证:对任意的
,
,且
,有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a95efb38e039cc55059d5f0fa2293ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e69866076dcff686a05e9e91e61e68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d31251aec52e0833858cb3041ffb2120.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95f7bca7d052c449ead14602df9151d2.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6eaa768bab5c855961cf19cd2327a5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/207bf290c6d6791f1223122f2105b205.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2210f152080d9a68a97c805f5c1cde96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a620b284ae80049376c7a7c9afab1f62.png)
您最近一年使用:0次
解题方法
2 . 已知函数
.
(1)求
在点
处的切线方程;
(2)若方程
有两个实根
,且
,证明;
时,
.(注∶e为自然对数的底数)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96a26f3341c78d51f60a5ac57eeaa5a1.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17c36300180be6ee56f4345157fa723a.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5809a06357f94fc7a2156c7e7af1ed2e.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/53bdd632a4ac64e56262d92a0593ffcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/132f835c340c2aa56a61e6c50c9f3fd2.png)
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3 . 如图.已知抛物线
,直线过点
与抛物线C相交于A,B两点,抛物线在点A,B处的切线相交于点T,过A,B分别作x轴的平行线与直线上
交于M,N两点.
![](https://img.xkw.com/dksih/QBM/2021/6/4/2735568573464576/2736668990644224/STEM/c33de87be05c4ee3a750770d33cbcde3.png?resizew=228)
(1)证明:点T在直线l上,且
;
(2)记
,
的面积分别为
和
.求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4754fbe523ca63eba3810a3f88f37df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00d374fbc4f18e80e65eb6c0068ea5c3.png)
![](https://img.xkw.com/dksih/QBM/2021/6/4/2735568573464576/2736668990644224/STEM/c33de87be05c4ee3a750770d33cbcde3.png?resizew=228)
(1)证明:点T在直线l上,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfc19f6ca36aed5aed419bbb3f6c5e86.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d12ce0fd66bf89b3c55d0fa01c63a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fa04b7ffc6d376a605688a0bb06537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c21cbb1c2bcbcb8391ac5a879f2ae0.png)
您最近一年使用:0次
2021-06-05更新
|
484次组卷
|
4卷引用:浙江省2021届高三下学期6月高考方向性考试数学试题
浙江省2021届高三下学期6月高考方向性考试数学试题(已下线)一轮复习大题专练72—抛物线6(取值范围问题)—2022届高三数学一轮复习安徽省六安市舒城中学2022届高三下学期仿真模拟(二)理科数学试题新疆维吾尔自治区和田地区民丰县2023届高三上学期期中考试数学(文)试题
4 . 曲线
,曲线
.自曲线
上一点
作
的两条切线,切点分别为
,
.
![](https://img.xkw.com/dksih/QBM/2021/2/25/2665748692049920/2669084851560448/STEM/93738af4-092a-40ce-8919-0c079a81f6e9.png)
(1)若
点坐标为
,曲线
的焦点为
.求证:
,
,
三点共线;
(2)求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbeb86f6729d87c5d9d4ae24af691b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d1138c04fc3a0e1c217db0d432e4aff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/2021/2/25/2665748692049920/2669084851560448/STEM/93738af4-092a-40ce-8919-0c079a81f6e9.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31cb5270002d890411ef600b773177ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cbff84327e964f912a54032e76ccc9.png)
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5 . 设
.已知函数
(
).
(Ⅰ)证明:曲线
与曲线
至少有一条公切线;
(Ⅱ)若函数
在
上有零点,求a的取值范围
注:
为自然对数的底数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cbf9f3c6765907f6dcda0b2f37eff31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
(Ⅰ)证明:曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80b730e5917935447a381bfe69654aed.png)
(Ⅱ)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55359c98a2db6121395327839035a865.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86f8b396f2ae63e79ffd8886ae4d3849.png)
注:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d218992d1942266d7208e476d0c4100.png)
您最近一年使用:0次
6 . 已知函数
有两个极值点
.
(1)记
,若
在
处有公共切线,求实数b的取值范围;
(2)求证:当
时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778542544e88a2ad6f3f601161c4a1eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dae74c724114bfeff024dd7b79f5edc.png)
(1)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f29bdd6f093965558328d7c6231d9545.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ec272e08d8c4241da4ccbc84e01b12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28d93e6e4676493faf142ec621c9cbcf.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77caf3ae8257283ab4b8252a6c38c224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a36c66b336043ee83af222c94cc9781.png)
您最近一年使用:0次
7 . 设函数
,其中
是自然对数的底数,
,
.
(1)若
,求
在点
处的切线方程;
(2)若
,
(i)证明
恰有两个零点;
(ii)设
为
的极值点,
为
的零点,且
,证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9657e0d5dfa8d18b06e542963d02986e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2beb22b735da7cb8054dd722450632f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2072fe5a3f23ac574dde4f0abb2fd5e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
(i)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(ii)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64df36fd0b37b72d36fe21e10f5d67f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d72a4fac789e542ac407d470317bf4c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/470727d8d10f6dc884985d6ac1f62566.png)
您最近一年使用:0次
名校
解题方法
8 . 已知函数
.
(1)当
时,求函数
在点
处的切线方程.
(2)若
对任意的
恒成立,求
的值.
(3)在(2)的条件下,记
,证明:
存在唯一的极大值点
,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b77ba7d2fd83543ff795ba95a2668b3.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5265d99095b635f62c7915298ec0e963.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7d632e9ddb7d9857b073978f8314ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)在(2)的条件下,记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2948d1f0476a537e7150e8a8b0d3a421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4df5ea5aebfb463f9e08de0c32c1c739.png)
您最近一年使用:0次
2020-07-11更新
|
708次组卷
|
3卷引用:浙江省绍兴市柯桥区鲁迅中学2019-2020学年高二下学期期中数学试题
9 . 已知椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff739204ba760216f82a5802e92cb244.png)
左顶点为
,离心率为
,且过点
.
![](https://img.xkw.com/dksih/QBM/2020/10/10/2568028685623296/2569376604782592/STEM/7c153ce2518b468490fe7139e8a7a7ae.png?resizew=168)
(1)求
的方程;
(2)过抛物线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
上一点P的切线
交
于
两点,线段
,
的中点分别为
.求证:对任意
,都存在这样的点P,使得
所在直线平行于
轴.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff739204ba760216f82a5802e92cb244.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e454c7161999e2a67138869f59d319b.png)
![](https://img.xkw.com/dksih/QBM/2020/10/10/2568028685623296/2569376604782592/STEM/7c153ce2518b468490fe7139e8a7a7ae.png?resizew=168)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(2)过抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.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/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd313d4e92a762fb7fb0c1cb65263d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
您最近一年使用:0次
20-21高二·全国·假期作业
10 . 函数
的图像在点
处的切线斜率为
.
(1)求
、
的值;
(2)证明:
对任意正实数
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c749f53f79729df3140804a2633e9a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0788b50c75cec47871e5c800b6cea39b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b2b2b3383d154d7a0f06cf20a0c0800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
2021-01-03更新
|
676次组卷
|
7卷引用:专题04 利用导数证明不等式 第一篇 热点、难点突破篇(练)- 2021年高考二轮复习讲练测(浙江专用)
(已下线)专题04 利用导数证明不等式 第一篇 热点、难点突破篇(练)- 2021年高考二轮复习讲练测(浙江专用)(已下线)专题18+导数大题专项练习-2020-2021学年【补习教材·寒假作业】高二数学(文)(人教A版)(已下线)专题21+导数大题专项练习-2020-2021学年【补习教材·寒假作业】高二数学(理)(人教A版)(已下线)专题15+导数大题专项练习-2020-2021学年【补习教材·寒假作业】高二数学(人教A版2019)(已下线)专题3.3 导数在研究函数中的应用-2020-2021学年高二数学课时同步练(苏教版选修1-1)(已下线)专题18 导数大题专项练习(已下线)专题21 导数大题专项练习