已知函数
.
(1)求不等式
的解集;
(2)若当
时,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/497ee3c0089fea09bca4c4638efe3216.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b666663ce3537a634a3b427b418eb62.png)
(2)若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab44afa9f295a9e3b82566ddc3e5ec85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2018-07-02 16:21:35
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相似题推荐
解答题-问答题
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适中
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【推荐1】已知函数
,
.
(1)求不等式
的解集;
(2)若
的解集为
,求关于
的不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fc6416610889e4bdccf4fe4c0e9d438.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636e471cf2e1904f72ca6ad4c8f0378a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c75b5b8cc53a498ba58277ff4c6498.png)
您最近一年使用:0次
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【推荐2】已知函数
(1)解关于
的不等式
;
(2)若对任意的
,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65084d45bf06d4c70eda8749c550751e.png)
(1)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffd3ae568863568ea5831a04dd51b3a9.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ecc70df44c7dae5330a2dcdb8a690cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/303d42b66cc4554bfa08b7ff023c2d6b.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
|
适中
(0.65)
名校
解题方法
【推荐1】已知函数
.
(1)当关于
的不等式
的解集为
,
时,求实数
,
的值;
(2)若对任意实数
,
时,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25a6d6385ec0d1110cfb80546d9aea88.png)
(1)当关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c04d02585b9cfb51a360bd4384610d71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e11924c42f6507cc25125654bec128b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0c97ab0193c2a53aac28207e6aa8bb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若对任意实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1114e87cde6e9fcf07ca2a3ea77c62a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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适中
(0.65)
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解题方法
【推荐2】设函数
.
(1)命题
,使得
成立.若
为假命题,求实数
的取值范围;
(2)求不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9559093a8a8f4ac501d79a4e6c14d7b9.png)
(1)命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5d3886a07c87033f8e2ca50dd5ab5bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c144a88beae3c6bf772ffb524e58b0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/679f37bb3e708fcfdd7ee8ec0b0c0776.png)
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