已知函数
.
(1)求不等式
的解集;
(2)当
时,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/743a31c6851646b517c60c110612584d.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a7d7cf29b4f829b98ee7eebccaec07.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/629507dcfdeb6866da428c4f45e2b21d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa38c6ad87e9615df2dd1ed897b924da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2021-10-16 22:24:19
|
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解答题-问答题
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适中
(0.65)
【推荐1】已知
.
(1)求不等式
的解集;
(2)已知
,
,若存在
,使得
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29daf0ecc1f4c9b0314fe9c63799afe0.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c912027d5e6e9cd991d551480acb61.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9a44c398634a0d381a92b08a721e40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f07ad90ca228230b03f12eb48ee0c1d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54dd583b9b208066392e07f77ee39ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f0281e6bbdbe08beeccb55adf84536.png)
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解答题-证明题
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适中
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解题方法
【推荐2】(1)解不等式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eb5b86de266166791ade708c480f9a8.png)
(2)已知
,且
,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eb5b86de266166791ade708c480f9a8.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fa70cba471ba57de69c962db483173f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d06a93d43e38b3460c77f1a1f06b8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/382bbcd14cdd52dbb35d42c569bbb564.png)
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适中
(0.65)
【推荐1】已知定理:“实数
为常数,若函数
满足
,则函数
的图像关于点
成中心对称”(此时也称点
为函数
的图像的对称中心)
(1)直接写出 函数
的图像的对称中心;
(2)试判断函数
的图像是否成中心对称,若是,求出其对称中心坐标;若不是,请说明理由;
(3)已知函数
满足
,当
时,都有
成立,且当
时,
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27c97d54952104950bfd7afc0176bbd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8c1efdcde7a72ff6fdd56c091258e37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/951b05c96af4f7704de24ac541b3f172.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a64d924836b4292239d9726c6473d7f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a64d924836b4292239d9726c6473d7f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/951b05c96af4f7704de24ac541b3f172.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53b61608d785aa5aab652b78217b1708.png)
(2)试判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c022abb80e97099c5a607b4f70a97fa3.png)
(3)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1664cb3ef42b80e256d9d91c3f49c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbb01a7f5e9861aa185c6c63fcd58c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eef0e031cf71bd223cc26e3c0fa5623a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1376168658dbe7f5b7f4d75fb1db545a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdec30e00fa005b956156de45ee635c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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名校
解题方法
【推荐2】已知函数关于x的函数
.
(1)当
时,求
的值域;
(2)若不等式
对
恒成立,求实数m的取值范围;
(3)若函数
有3个零点,求实数t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec5748527c15e370dcf4230ad2d0e1b5.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69303621c56f67b4ec4e0ac575deb554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/136b448efa0cc1804daee227d56afe5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69d1f605af82f70b74d667ce90c4e99d.png)
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适中
(0.65)
解题方法
【推荐3】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5c79be54629f07e67c241e3e24f81b.png)
(1)当
时,判断
的奇偶性;
(2)当
,求
在
的值域;
(3)若对任意
,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5c79be54629f07e67c241e3e24f81b.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/215bf538be81ac1cb5c15bc15e051f25.png)
(3)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9186dc3f15560a1e10970193893e9f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次