已知函数
.
(1)当
时,求不等式
的解集;
(2)若存在实数a,使得不等式
成立,求实数a的的最大整数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8b2300cb48b1abce09c1a519bf93926.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369100ccd44feaa77e5f119ea949a879.png)
(2)若存在实数a,使得不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5931095eb29d9d6b55ed9fa32a4ef1d.png)
更新时间:2020-05-05 19:32:09
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名校
解题方法
【推荐1】已知函数
.
(1)当
时,解不等式
;
(2)若对任意实数
,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2633a33d7f17e245a4e5851d2463ad.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667cb91683f94d0dcaf3d803fbfb6838.png)
(2)若对任意实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2608a57caffde627dbf140ca22a2ff8a.png)
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解答题-问答题
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(0.85)
解题方法
【推荐2】已知关于
的不等式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24891870e39a431657b5b43d65d404bb.png)
的解集为
.
(1)求
的最大值
;
(2)若正数
满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24891870e39a431657b5b43d65d404bb.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(2)若正数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ace74bfb716753490ebe0e740ff5baa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d522ab1216252d660dad4e6bc8495084.png)
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您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
解题方法
【推荐1】已知函数
.
(1)求不等式
的解集;
(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98d916b7145fb85cdfe34832a799316d.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/990d3feee85e869ea9ab561ff63d46a2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b453e4a93f1c58290762701b655e061.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
【推荐2】已知
.
(1)若
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(2)若关于
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的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e730786ddde997ce21463ad207020bb.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
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(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b6b942890961d33fca0bb25713b0451.png)
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【推荐1】选修4-5:不等式选讲
已知函数
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![](https://img.xkw.com/dksih/QBM/2016/11/15/1573148011216896/1573148017459200/STEM/df2bc94fb1924bc28df5eba8d08f9e42.png)
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![](https://img.xkw.com/dksih/QBM/2016/11/15/1573148011216896/1573148017459200/STEM/eb02a287bb434583b524c92860aace1a.png)
(2)当
![](https://img.xkw.com/dksih/QBM/2016/11/15/1573148011216896/1573148017459200/STEM/8357005e99804df984f5171a52ddeba0.png)
![](https://img.xkw.com/dksih/QBM/2016/11/15/1573148011216896/1573148017459200/STEM/bf055f58c1624ec794a2a445b247fcae.png)
![](https://img.xkw.com/dksih/QBM/2016/11/15/1573148011216896/1573148017459200/STEM/2db2be263dea4b6984885974bf5aec4b.png)
![](https://img.xkw.com/dksih/QBM/2016/11/15/1573148011216896/1573148017459200/STEM/4632e28a4c2046dda19b9f28dce15685.png)
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