名校
1 . (1)在复数范围内解方程:
(i为虚数单位);
(2)设系数为整数的一元二次方程
的两根恰为(l)中方程的解,求
的最小值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f31bce2a133fdf2231046fa43cb4f149.png)
(2)设系数为整数的一元二次方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13fa32c1e926f40a0722d106563777ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a343d47de28db5748a6f0a8c6f4715d7.png)
您最近一年使用:0次
解题方法
2 . 对于三次函数
、给出定义:设
是函数
的导数,
是
的导数,若方程
有实数解
,则称点
为函数
的“拐点”.同学经过探究发现:任何一个三次函数都有“拐点”;任何一个三次函数都有对称中心,且拐点就是对称中心,若
,则该函数的对称中心为____________ ,计算则
的值等于_____________ ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b5ced358d06bfc976b69b3f0bf1ae7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aac282e92da3691942a6ba8511de2303.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc581690f1d82133bb5fed3d7f365f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0573a6bcc480a91a43126d01bc19eeae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c40a07bf78f05929b12cd264511f968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9df4c75d6d43cff08bb4b9fc627b8a2d.png)
您最近一年使用:0次
12-13高三上·湖北黄冈·期末
3 . 对于三次函数
,给出定义:设
是函数
的导数,
是
的导数,若方程
有实数解
,则称点
为函数
的“拐点”.某同学经过探究发现:任何一个三次函数都有“拐点”;任何一个三次函数都有对称中心,且“拐点”就是对称中心.
若
,请你根据这一发现,求:
(1)函数
对称中心为______ ;
(2)计算![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0666ae9ea27c8428cd921b7418f9b766.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/012429b7101ba0f84e7b45598ed12db9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10acd6d864583617dd3e71240bf0c857.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df1fa6ca9eb7cea9131dad36db6a0ac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43db00e106c7d08a76a7ba71ca5e63d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f087ded8039eedaa8aa724b81ec393e9.png)
(1)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f087ded8039eedaa8aa724b81ec393e9.png)
(2)计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0666ae9ea27c8428cd921b7418f9b766.png)
您最近一年使用:0次
2016-12-01更新
|
543次组卷
|
5卷引用:2011—2012学年四川省金堂中学高二下学期期中(文理)数学试卷
(已下线)2011—2012学年四川省金堂中学高二下学期期中(文理)数学试卷(已下线)2012届湖北省黄冈市高三上学期期末考试文科数学人教B版(2019) 选修第三册 北京名校同步练习册 第六章 导数及其应用 6.1 导数 6.1.4 求导法则及其应用河北省保定市高碑店市崇德实验中学2024届高三上学期期末数学试题山西省太原市师苑中学校2023-2024学年高三下学期第二次月考数学试题
12-13高三下·海南省直辖县级单位·阶段练习
名校
4 . 对于三次函数
给出定义:设
是函数
的导数,
是函数
的导数,若方程
有实数解
,则称点
为函数
的“拐点”,某同学经过探究发现:任何一个三次函数都有“拐点”;任何一个三次函数都有对称中心,且“拐点”就是对称中心。给定函数
;,请你根据上面探究结果,计算![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74509bd102478852d89878c5c2bdaf45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2add4fd76fa92391b6a21fd1d043da5.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/012429b7101ba0f84e7b45598ed12db9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10acd6d864583617dd3e71240bf0c857.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df1fa6ca9eb7cea9131dad36db6a0ac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43db00e106c7d08a76a7ba71ca5e63d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f087ded8039eedaa8aa724b81ec393e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74509bd102478852d89878c5c2bdaf45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2add4fd76fa92391b6a21fd1d043da5.png)
您最近一年使用:0次
2021-11-12更新
|
622次组卷
|
6卷引用:2013-2014学年湖北省荆门市高二下学期期末质量检测理科数学试卷
(已下线)2013-2014学年湖北省荆门市高二下学期期末质量检测理科数学试卷(已下线)2013届海南省琼海市嘉积中学高三下学期第一次月考理科数学试卷(已下线)2014届吉林省实验中学高三上学期第一次阶段检测理科数学试卷福建省漳州第一中学2020-2021学年高二下学期第二次月考数学试题河北省邯郸市鸡泽县第一中学2022-2023学年高二下学期6月月考数学试题河北省邯郸市鸡泽县第一中学2023-2024学年高二下学期3月月考数学试题
5 . 将下列问题的解答过程补充完整.
依次计算数列
,
,
,
,…的前四项的值,由此猜测
的有限项的表达式,并用数学归纳法加以证明.
解:计算
,
,
① ,
② ,
由此猜想
③ .(*)
下面用数学归纳法证明这一猜想.
(i)当
时,左边
,右边
,所以等式成立.
(ⅱ)假设当
时,等式成立,即
④ .
那么,当
时,
⑤
⑥
⑦ .
等式也成立.
根据(i)和(ⅱ)可以断定,(*)式对任何
都成立.
依次计算数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6424c9c0ce88c2701bb3b83067a051d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df93fdc8ca17ee10a2d6b54e54213acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e77db166dbdada6e51bd5e603a0e409.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8406b3952927dd9017ab411dcac57b8.png)
解:计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/876d453473dd136199f4fd4653f00a47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a4f19a71132d1b0c1b94e8ed4a71d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d1447bca977671d5ce032975edb0878.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a27e4ece094c7799ca69c4742b573aec.png)
由此猜想
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bb7dc2d8e081b24e0ac29e2f04b4c35.png)
下面用数学归纳法证明这一猜想.
(i)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87b351f16728b0023fd63678f8103c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90bae886c8ab958aa4c693bf8e0627d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90bae886c8ab958aa4c693bf8e0627d.png)
(ⅱ)假设当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bd127e6c509dce7558952d89d436148.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce436c13abda6f1c8cc297d4f707dbf2.png)
那么,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63ba21f3d0cfc86d40e2e06446623ce0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53bf6680c197e995a4a9c13e8b363eb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ea95e79eac5ee4d3a76c4112e1f077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
等式也成立.
根据(i)和(ⅱ)可以断定,(*)式对任何
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
您最近一年使用:0次
名校
6 . 将
化成分数形式方法如下:
,设
,则
,解得
,因此
.请类比此方法,计算
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff62abaac5fa0dadd77be3ab6456c91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa94738cf36b2c64bd9059de771dcac5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/321b62605c56824aec79d7574de0752d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7b578fb5ef89ea0f787b287a9009ff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e57f8a8caf828b5592ca49f3953a4099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a94f9c08eed4f392830d23494aac8e57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47e5d6c439dbb8c1b36d9f24e610d0ae.png)
A.1 | B.![]() | C.2 | D.![]() |
您最近一年使用:0次
解题方法
7 . 对于三次函数
,给出定义:设
是函数
的导数,
是
的导数,若方程厂
有实数解
,则称点
为函数
的“拐点”.某同学经过探究发现:任何一个三次函数都有“拐点”;任何一个三次函数都有对称中心,且拐点就是对称中心,若
,则该函数的对称中心为__________ ,计算![](https://staticzujuan.xkw.com/quesimg/Upload/formula/548eb858131e44c6d2a1adf359b3d38c.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/012429b7101ba0f84e7b45598ed12db9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10acd6d864583617dd3e71240bf0c857.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df1fa6ca9eb7cea9131dad36db6a0ac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43db00e106c7d08a76a7ba71ca5e63d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/155d61774bc044c666368e15c0e83390.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/548eb858131e44c6d2a1adf359b3d38c.png)
您最近一年使用:0次
名校
8 . 对于三次函数
(
)给出定义:设
是函数
的导数,
是函数
的导数,若方程
有实数解
,则称点
为函数
的“拐点”,某同学经过探究发现:任何一个三次函数都有“拐点”;任何一个三次函数都有对称中心,且“拐点”就是对称中心.给定函数
,请你根据上面探究结果,计算![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bae347be75a50baa0af92d71324a15b.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbb68078590e8785def6cb1d7e0126a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aac282e92da3691942a6ba8511de2303.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc581690f1d82133bb5fed3d7f365f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43db00e106c7d08a76a7ba71ca5e63d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db46d62d4c778babb46a0a3d223384e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bae347be75a50baa0af92d71324a15b.png)
您最近一年使用:0次
2020-02-27更新
|
396次组卷
|
3卷引用:安徽省宿州市十三所省重点中学2019-2020学年高二上学期期末考试数学(文)试题
9-10高二下·江西新余·阶段练习
解题方法
9 . 已知函数
,当
时,函数
在x=2处取得最小值1.
(1)求函数
的解析式;
(2)设k>0,解关于x的不等式
.
![](https://img.xkw.com/dksih/QBM/2010/7/8/1569784929886208/1569784934776832/STEM/126da0e487704b4c857e0cf7fe9e8589.png)
![](https://img.xkw.com/dksih/QBM/2010/7/8/1569784929886208/1569784934776832/STEM/ab29fcaa3d944f2aaa3e574a2fc75b7f.png)
![](https://img.xkw.com/dksih/QBM/2010/7/8/1569784929886208/1569784934776832/STEM/6cd8b69cd25a4fdabe5edaa95252b3c5.png)
(1)求函数
![](https://img.xkw.com/dksih/QBM/2010/7/8/1569784929886208/1569784934776832/STEM/6cd8b69cd25a4fdabe5edaa95252b3c5.png)
(2)设k>0,解关于x的不等式
![](https://img.xkw.com/dksih/QBM/2010/7/8/1569784929886208/1569784934776832/STEM/16a146ed6ae14f119299fab3b1ac59b6.png)
您最近一年使用:0次
10 . 对于三次函数
,定义:设
是函数
的导数
的导数,若方程
有实数解
,则称点
为函数
的“拐点”,有同学发现“任何一个三次函数都有‘拐点’;任何一个三次函数都有对称中心;且‘拐点’就是对称中心.”根据此发现,若函数
,计算![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21adb23350026638d3094245b093acef.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75044e0301ef9def5c1a1c8e6f2cba77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02639813b0ea2d5b097bf496bed88af0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a673c4b255a76a31893c53b4e8c3420b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/941e6b1b32d3f7fc5586252d838c9924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0573a6bcc480a91a43126d01bc19eeae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f40d352eec1bf856772b11c469ccfa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21adb23350026638d3094245b093acef.png)
您最近一年使用:0次
2018-07-17更新
|
673次组卷
|
2卷引用:【全国市级联考】山东省德州市2017-2018学年高二下学期期末考试数学(理)试题