名校
1 . 对于函数
的导函数
,若在其定义域内存在实数
和t,使得
成立,则称
是“卓然”函数,并称t是
的“卓然值”.
(1)试分别判断函数
,
和
,
是不是“卓然”函数?并说明理由;
(2)若
是“卓然”函数,且“卓然值”为2,求实数m的取值范围;
(3)证明:
是“卓然”函数,并求出该函数“卓然值”的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851c68ef2e0703706f3b528daa902eb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79faaa73be5986e48442dcd5e80bc0a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
(1)试分别判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2b629bea8e22de9bfc49158e2289871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9322dd8f56b5f8d2c667fdf0d4a9f9aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f42b2a9736c8943106472a7398d2892.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/264e54b81230f39733dcc4f39cf31c13.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb3fdcbe2501044dbf77ba6d6e786a34.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b1a851f8e1dcaa446c0afa18656dfa8.png)
您最近一年使用:0次
2024·全国·模拟预测
名校
解题方法
2 . 已知函数
.
(1)当
时,讨论函数
的单调性.
(2)若
有两个极值点
.
①求实数
的取值范围;
②求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d844374b17ee68cb3aaecd568c7631b8.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
①求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
②求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d4f313e85b97bda207222fa6e82b463.png)
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2024-05-06更新
|
1120次组卷
|
7卷引用:2024年普通高等学校招生全国统一考试数学押题卷(五)
(已下线)2024年普通高等学校招生全国统一考试数学押题卷(五)(已下线)专题2 导数与函数的极值、最值【练】四川省内江市第三中学2024届高三第一次适应性考试数学(理科)试卷天津市新华中学2023-2024学年高三下学期校模数学试卷河北省衡水市第二中学2023-2024学年高二下学期5月学科素养检测(二调)数学试题福建省宁德市福安市第一中学2023-2024学年高二下学期第三次月考数学试题(已下线)2024年天津高考数学真题变式题16-20
3 . 已知函数
是
的导函数.
(1)证明:
在
上存在唯一零点
;
(2)设函数
.
①当
时,求函数
的单调区间;
②当
时,讨论函数
零点的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39c9cfbd0199a49db74fcd5eaab96e02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2372f424431ce7b547a66b7d61d75421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20adb81ce0e1e0c69b0dc43cfe7857c5.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d721c4fce72b1e602b57ae1ba34de24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8a4dcc1a52f04e517a640612f4a2500.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
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名校
4 . 已知函数 ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cd66879c7d7c41c4119ac9571a90342.png)
(1)讨论
的单调性.
(2)证明:当
时, ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0de742522bdf16fedb2765f379029a4.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cd66879c7d7c41c4119ac9571a90342.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23fb90e09994fdc6ab02ed6ba664f31f.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c472109d36ba3e37771845ac86f714a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0de742522bdf16fedb2765f379029a4.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d985495cdfb142edece75f11da70b3da.png)
您最近一年使用:0次
2024-03-12更新
|
1118次组卷
|
5卷引用:甘肃省陇南市部分学校2024届高三一模联考数学试题
2024·全国·模拟预测
名校
解题方法
5 . 已知实数
,
,
.
(1)求
的值;
(2)若
对
恒成立,求a的最小值;
(3)当正整数
时,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882b660047bb6ded500cedba57958e00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f146c48c81d7148fa0acbb24e9716e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35023b165fd0e156dc2264859bec204.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b3ec7ada52f4850719a970aeb59ca16.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1415277a2abd787827778054bd134d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4088469fc818fd8b021460b4c90cccd9.png)
(3)当正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf343fa2731b063bc77ebed5b957c9ef.png)
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2024-01-18更新
|
420次组卷
|
4卷引用:2024届数学新高考学科基地秘卷(六)
(已下线)2024届数学新高考学科基地秘卷(六)广东省佛山市第一中学2024届高三上学期第二次调研数学试题江西省上饶艺术学校2024届高三上学期1月月考数学试题(已下线)广东省佛山市第一中学2024届高三上学期第二次调研数学试题变式题17-22
解题方法
6 . 已知函数
.
(1)当
时,求证:
;
(2)若
时,
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b699e08ada1a91bddcef3d3fe2d61f.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acfc5d050dcf9ebda09b2200e5bd6dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2344283a4eb40a8ed170672aa3336d35.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc98a4d9ae0580aa2c1152ffb770d4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e653994b245fbdc2ac3458429c65e69e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
7 . 已知函数
(
为常数),记
.
(1)若函数
在
处的切线过原点,求实数
的值;
(2)对于正实数
,求证:
;
(3)当
时,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/139d335a1800d7441b5c9f8e1202b1e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ba1216bab872fd6bf1b93db0bddb1f1.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)对于正实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e2de772d89faaacc8cb3fc92a36412.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18a73be8df38d747c2da62c43b2680b3.png)
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8 . 已知函数
.
(1)求函数
的单调区间和最小值;
(2)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f051b579e8f5513893624ca149dba098.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ffd8b9b441ccc043d7914fab9a64936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da1e8206277f2bd85e7fc5b84c421156.png)
您最近一年使用:0次
9 . 已知函数
,
(1)讨论函数
的单调性;
(2)若
,证明:对任意
,存在唯一实数
,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/125fd2a988cc502082411277f3f1d7f8.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d41acc47493556617fe7b9e55093d10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9fef90e594e8de68a34a1e6441c941f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d701701514d29d22d56e8a35f797d267.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab6743446adfe0dce4e9e8844e0d81c3.png)
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2024-06-07更新
|
374次组卷
|
2卷引用:江西省重点中学协作体2024届高三第二次联考数学试卷
10 . 已知函数
.
(1)求函数
的单调性;
(2)若
有两个不相等的零点
,且
.
①证明:
随
的增大而增大;
②证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2171c919d54a0168197a4ae8222792c8.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1afa638b397608f0ad39f1beab9b2243.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
①证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8dc531505ec45b8eb8ae4fad88d69e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
②证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7f7298bf3df9eef84d25c1ccaedf3e6.png)
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