已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb3b6c56aee4bb8a8131fd960415c745.png)
(1)求函数
的最小值;
(2)设函数
,若不等式
对任意的
恒成立,求实数a的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb3b6c56aee4bb8a8131fd960415c745.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/487f22edeec8b9f7d2797e495cb6ab04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc0879734ee766cb630cfeb3f25fea7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58e82c4003d20b36777f7aea584e3dd4.png)
更新时间:2022-09-02 18:54:42
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相似题推荐
解答题-问答题
|
困难
(0.15)
解题方法
【推荐1】已知函数
(e为自然对数的底数).
(1)若
在点
处的切线方程为
,求a的值;
(2)若
的最小值为1,求
在
上的最小值;
(3)若
,证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a32e3a1fa4228c15bb163eaf6dfa98d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9f8845aa2b51c460f2d798c9f62fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/675036cd58ab9b90555a0ce377326c01.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69f223ac02297f740beaa57d900296a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed2f490aac02631c2ed9e6b76354a49.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/974cbfcfd5bffd6c462660cb6557726d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4cbc7b067862a3d9c6789b392fc068.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d35ad34acac2225d0ace204efdcaf02.png)
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解答题-证明题
|
困难
(0.15)
【推荐2】已知函数
,
.
(1)求证:对
,函数
与
存在相同的增区间;
(2)若对任意的
,
,都有
成立,求正整数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc1c5a6e27236387623481b1250326ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4475d7483818e64accb33e96ff90c83.png)
(1)求证:对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d6e67c85971a3fbef7a0b0a59b92dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05fce924911d5ed93147dfce9e41c2b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
解答题-问答题
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【推荐3】设函数
.
(1)当
时,求函数
的单调减区间;
(2)设
,求函数
在区间
上的最大值;
(3)若存在
,使得函数
图象上有且仅有两个不同的点,且函数
的图象在这两点处的两条切线都经过点
,试求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f692a218b2ea31a0f8f338131307568d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd8afa73d164485ed699c8b37f12eb52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914b6ca2933416cce4a52757f4c69072.png)
(3)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d2be44deec9d3c3eb6b456488b29358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caff39fdb463050709ad1478b8b485dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解答题-问答题
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困难
(0.15)
解题方法
【推荐1】已知
与
.
(Ⅰ)若
,
在
处有相同的切线.求
的值;
(Ⅱ)设
,若函数
有两个极值点
,且
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93cfc910108250106ca6ba0ed40135a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5ec7ebc19d9b60f3265816830dc6e0d.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(Ⅱ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f3c2be7482719651bcf491949681e05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c388166862b3ccfcc7ca749ebe5949.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0244821c4e431ab581a230e3c1903a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51525c675eb3115eb20d8f76444589fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
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困难
(0.15)
解题方法
【推荐2】已知函数
,
为实常数)
(1)当
时,求函数
在
上的最小值;
(2)若方程
(其中
在区间
上有解,求实数
的取值范围;
(3)证明:
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdc873fc03e6e4d3c4ba02f8b1147b20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1b4308c12cf73c1e28186ab597a7471.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9395af40581559afb4bcacccef3b4776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5026b1a1d78c77b8cd1ade7731a5c170.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e8d66ca40b852076f6490bb7a885662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d218992d1942266d7208e476d0c4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e254a7d08060fb2655d5b07df06e7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f599f1d556c265f6ab675d91fda1676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11fb30059b272ea56b208707be164169.png)
您最近一年使用:0次
解答题-证明题
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困难
(0.15)
名校
解题方法
【推荐1】已知f(x)=x-
(a>0),g(x)=2lnx+bx且直线y=2x-2与曲线y=g(x)相切.
(1)若对[1,+
)内的一切实数x,小等式f(x)≥g(x)恒成立,求实数a的取值范围;
(2)当a=l时,求最大的正整数k,使得对[e,3](e=2.71828是自然对数的底数)内的任意k个实数x1,x2,,xk都有
成立;
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb59638769faa7d399f622c03ee3674f.png)
(1)若对[1,+
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a27e72b96bc7af66c7472a9d7370e5b.png)
(2)当a=l时,求最大的正整数k,使得对[e,3](e=2.71828是自然对数的底数)内的任意k个实数x1,x2,,xk都有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/228d6f857cc5f588f1c75be0b895a6c4.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c783b0e4a6c503b92dde49b523679b1b.png)
您最近一年使用:0次
解答题-问答题
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困难
(0.15)
【推荐2】已知函数
,
,其中e为自然对数的底数.
(1)求函数
的图象在点
处的切线方程;
(2)若
对任意的
恒成立,求t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb167570b6a7445d37c386684e2a6cca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7246d8d6c5fe09e2ec6daf1606335f3e.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e653994b245fbdc2ac3458429c65e69e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
您最近一年使用:0次