记
,
分别为函数
,
的导函数.若存在
,满足
,且
,则称
为函数
与
的一个“
点”.已知
,
.
(1)若
,
,
存在“
点”,求
的值;
(2)对任意
,是否存在实数
,使得
,
存在“
点”?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/604d4be927e22330147c4763c7aaa869.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e29b14b30759f11f6e09171de7dbf8a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b672f564d03ed46d092bb130f229ad8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86135bd40536042536c1c7bed21d0171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/799b324b514d6044672c133d8fef2dc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed70e04c30c811a97e35eb3bbaed1222.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b745d1faaa271e7438f964acaad4cdd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b672f564d03ed46d092bb130f229ad8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86135bd40536042536c1c7bed21d0171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4152c3de8a877a120d85b0cfa9e8c697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a0298ade60987996538deb2d3bc218.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b672f564d03ed46d092bb130f229ad8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86135bd40536042536c1c7bed21d0171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4152c3de8a877a120d85b0cfa9e8c697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a0298ade60987996538deb2d3bc218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
2022·黑龙江哈尔滨·模拟预测 查看更多[4]
黑龙江省哈尔滨第九中学校2022届高三下学期第四次模拟考试理科数学试题黑龙江省哈尔滨第九中学校2022届高三下学期第四次模拟考试文科数学试题(已下线)5.2 导数的运算-2022-2023学年高二数学《基础·重点·难点 》全面题型高分突破(苏教版2019选择性必修第一册)(已下线)专题08 导数的运算 (六大题型+过关检测专训)-2023-2024学年高二数学《重难点题型·高分突破》(人教A版2019选择性必修第二册)
更新时间:2022-05-19 14:07:14
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相似题推荐
解答题-问答题
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解题方法
【推荐1】(1)用数学归纳法证明:当
时,
(
且
);
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a96119cc3005adf559140161bd872143.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/343164eef8fc9cd1893d8ac3f42f02e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5c4eb267ef2f28dd312c9abf5de31a1.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baaaf3268c128174513aa6c10e8f550b.png)
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【推荐2】①在高等数学中,关于极限的计算,常会用到:i)四则运算法则:如果
,
,则
,
,若B≠0,则
;ii)洛必达法则:若函数
,
的导函数分别为
,
,
,
,则
;
②设
,k是大于1的正整数,若函数
满足:对
,均有
成立,则称函数
为区间(0,a)上的k阶无穷递降函数.结合以上两个信息,回答下列问题;
(1)计算:①
;
②
;
(2)试判断
是否为区间
上的2阶无穷递降函数;并证明:
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac55b621b2f27bc851f91362ef8fed13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd7ae65af1a33cd09757bd180e607a22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b0ca1f81ee531ffe24a41e094bf1d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4961ef8dba3a1376346c179290bfa545.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ff3cd9870608b67f0bc1d941162ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090a91e4f3c8930674f98a9fa527709b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783c88951a458d5862557f2a041f817a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46fd51a4ede3d8a6433cf0c114013956.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d16c5321133b0e626b32b5fa4b46181d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3900fe0b85ab5c057c4e3c2ceb0cb062.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02a69e2c9a58ba833bd9912f3c14cdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67439f6be88350018cfba3f2aca73f06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(1)计算:①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7529d1357e6d9e2343b2bb7fcb9aaf55.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4e7be4d2e62ef20bcee0c65a3535879.png)
(2)试判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fff62e468bc81227b9586e769acbc5ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebbd5fbcb0ed2ac6d94982bc35a4f6b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/415e604884cb0c50cfcb95df9e9956e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2484f4dc493a45dae01bb8d385ee14e5.png)
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解题方法
【推荐1】英国数学家泰勒发现的泰勒公式有如下特殊形式:当
在
处的
阶导数都存在时,
.注:
阶导数指对一个函数进行
次求导,
表示
的2阶导数,即为
的导数,
表示
的
阶导数,
为自然对数的底数,
,该公式也称麦克劳林公式.设
,根据以上信息,并结合高中所学的数学知识,解决如下问题:
(1)利用泰勒公式求
的近似值;(精确到小数点后两位)
(2)设
,证明:
;
(3)证明:
(
为奇数).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6368fec0c2c25db7c29b014d60270e97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fb7618da716747c7cf514bbd1c58ad2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10acd6d864583617dd3e71240bf0c857.png)
![](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/35993bd1db970330494665d925c0be7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6696028290bbaddf628d64bad0ed95b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11204e2fb6e560bf7a4ca26eaebfc526.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78478b44ff22e088fd8e6522c5d78a2.png)
(1)利用泰勒公式求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25b6bad45bbc4b4c4cde24e16512c098.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8586154d8c4fb5fef893d39a7701f921.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48181c310080dbcf23704a76023adbc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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【推荐2】设定义域为
的单调函数
,对任意
,都有
,若
是方程
的一个解,且
,则实数
= .
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092840583168/1572092846563328/STEM/9419984d033f46de9959db90f061c67e.png)
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092840583168/1572092846563328/STEM/364544d6c3c745f2b04d1980b365644b.png)
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092840583168/1572092846563328/STEM/26e5200b5bc44237a75b94859e6facbd.png)
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092840583168/1572092846563328/STEM/03817b9e46f344c7bec4528acd79b9d7.png)
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092840583168/1572092846563328/STEM/59ed466800a9464ebea368455f7c960c.png)
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092840583168/1572092846563328/STEM/1c33d82c03694e23a60e61a7003b5ae7.png)
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092840583168/1572092846563328/STEM/97885f112b1b4badbace59d9af36a320.png)
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572092840583168/1572092846563328/STEM/91486217f56e492099845a0c99300f56.png)
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【推荐3】已知函数
.
(1)当
时,求函数
的最小值;
(2)是否存在正整数
,使得
恒成立,若存在,求出
的最小值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34eb96cf4f336cf8cca9bd701af5d4cc.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60c85cecb4bd9a8ef879dc1511aa490a.png)
(2)是否存在正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
【推荐1】对于定义域为D的函数y=f(x),如果存在区间
,同时满足下列条件:①f(x)在[m,n]内是单调的;②当定义域是[m,n]时,f(x)的值域也是[m,n],则称[m,n]是该函数的“和谐区间“.
(1)判断函数
是否存在“和谐区间”,并说明理由;
(2)如果[m,n]是函数
的一个“和谐区间”,求n-m的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e1c4e16e2ff56b5eb232e64fb16f63.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7839d16a6bde4db4d413a723e571799.png)
(2)如果[m,n]是函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deff798b4bd7603d952c58a1c914d8ae.png)
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【推荐2】若函数
与
满足:对任意的
,总存在唯一的
,使
成立,则称
是
在区间
上的“
阶伴随函数”;当
时,则称
为区间
上的“m阶自伴函数”.
(1)判断
是否为区间
上的“2阶自伴函数”?并说明理由;
(2)若函数
为区间
上的“1阶自伴函数”,求
的值;
(3)若
是
在区间
上的“2阶伴随函数”,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37cb15d282a40c780c2b68287e47867e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c28e384ba050b238e11f7c74d3002aab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41286a1ca05dc551a9f734e6ed89996f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9587df831df1af5e7dd6be5fdc7bd8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dd895c07978d213e56cba4f4da5ae02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/044c4ab1fc8f6545baae8b8c201a39de.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff89495dd213ab1e13ca7f21a83e2513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a8d6ad7aa09c9c5f552a4c8e867a6dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab53100918ee568f0fb7a3af889c97ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4afe30f874ba1a00ccdf5fe6999fbad4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb87c830a03204a5b783ad4c2ba49c4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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