已知函数
,且
.
(1)求不等式
的解集;
(2)若
对
恒成立,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ea9f7a49359b22b0a5e20177d2bcf32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/386db31213b5988c1948f87c7f96f7b9.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f9afb3bc3305383cec2106bce4460b7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe3ade57b8e9b2679c4e24ec92f22699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
更新时间:2020-10-18 19:36:41
|
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解答题-问答题
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适中
(0.65)
解题方法
【推荐1】已知函数
.
(I)当
时,设
,证明:函数
在
上单调递增;
(II)若
,
成立,求实数
的取值范围;
(III)若函数
在
有两个零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4bd5d4e003c265a6895a4560e37e6c.png)
(I)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb5f421939ee855f25927e7570d82c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c025f202ce6be7d85a0b4206d05e85a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(II)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65e232978321f1ff1aece2b08b89bc6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23db045e16cf707396caf4fa38dbb650.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(III)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fd5f4754ff320b5a75b27159b36ed30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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适中
(0.65)
【推荐2】设函数
是定义在R上的函数,对任意实数
,有
.
(1)求函数
的解析式;
(2)若函数在
在
上的最小值为-2,求
的值.
![](https://img.xkw.com/dksih/QBM/2015/11/19/1572298157834240/1572298163134464/STEM/40d90d3065ff4594ab1e10f7e001af5a.png)
![](https://img.xkw.com/dksih/QBM/2015/11/19/1572298157834240/1572298163134464/STEM/c4e3bd3216e04389b196233b19b537a0.png)
![](https://img.xkw.com/dksih/QBM/2015/11/19/1572298157834240/1572298163134464/STEM/c6859cbf5b2d482ab8a0f0271d94e704.png)
(1)求函数
![](https://img.xkw.com/dksih/QBM/2015/11/19/1572298157834240/1572298163134464/STEM/40d90d3065ff4594ab1e10f7e001af5a.png)
(2)若函数在
![](https://img.xkw.com/dksih/QBM/2015/11/19/1572298157834240/1572298163134464/STEM/710e0d8f971843f99a6c05ea5eae2bd9.png)
![](https://img.xkw.com/dksih/QBM/2015/11/19/1572298157834240/1572298163134464/STEM/e0208e1d8510432996e79f3bb6fb291d.png)
![](https://img.xkw.com/dksih/QBM/2015/11/19/1572298157834240/1572298163134464/STEM/f352e1767f86402f8a699b82f5c440ef.png)
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解答题-问答题
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适中
(0.65)
【推荐1】已知函数
.
(1)判断函数
的奇偶性,并解关于
的不等式
;
(2)正实数
,
满足
,若关于
的不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e4d19403b2442bf358adb39c8db0a5d.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(2)正实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/155bce60882713d89e055f4601192b94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2cf2f1bdb6c4f3bc450021ac06ff9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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适中
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名校
【推荐2】已知全集
,集合
,
.
(1)若
,求
,
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc0dc8098ad6f31bdd87771ca9cfa33a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dce1a698d72b6754a78fc17d2313445.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d6220e7c3b6b9efb99dc0b488a7513.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfb17a2a90cd479b604258d1258e9636.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd9d50619b779c1056602f46b2a95e90.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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适中
(0.65)
名校
解题方法
【推荐1】已知函数
是偶函数.
(1)求
的值;
(2)若
对于任意
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3b9f113c94e9682c7bf711962d18e13.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9167874f8802a463051756ff94380a8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】已知向量
,
,函数
,
(1)当
时,求函数
的值;
(2)若不等式
对所有
恒成立.求实数
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1cf6df9b968aba4611d275a1f11b90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4fa1a73ee0185527f846cdc49829446.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9addb4ceea3e9872dc9e4e5ebc9b70c.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b87f4ef298bdeebf59a0d850aff72c.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75408451cf50be13a518019e89f26429.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ce1092d7a7783666be115c0ea89e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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