(1)已知关于
的不等式
的解集为
或
,求
的值:
(2)设
,集合
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/478d950181c9b7b883422d26bf4d37fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da9bfc7bad8739fa88eef5cdb41d367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65316bafc89cf5e9cf9dd235ba61db18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360ff131c51a4ef6745538c18cec92c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/838b8a3e4964124722c8bb8297cbfc84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13502d46b8563c54c09b29b20b3006a4.png)
更新时间:2023-09-19 23:05:20
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解答题-问答题
|
较易
(0.85)
【推荐1】已知集合
,
(
).
(1)当
时,求
和
;
(2)是否存在实数
,使得集合
?若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a08d5b01997cdfee46dce7d64775b900.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/190f420cc44f9c487705b33a7a666f33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37720b84df310887f075e7092a995af4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8250496dff397b3e8778755a8fe5d31e.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560ca08eb0489bcbc15e2a4e41f3cb7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a70d32c64918aa4d1d9d3ce0bdbf7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560ca08eb0489bcbc15e2a4e41f3cb7f.png)
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解答题-问答题
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【推荐2】设集合A={x|x2+bx+c=x},B={x|(x-1)2+b(x-1)+c=x+1},若A={2},求集合B.
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解答题-问答题
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解题方法
【推荐1】已知
.
(Ⅰ)若不等式
对任意的
恒成立,求a的取值范围;
(Ⅱ)若不等式
的解集为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fb654fb6d68b2fa5e73ea2c111899e2.png)
(Ⅰ)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(Ⅱ)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3f1123df2cc7e3548da93fdeeefa9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a7e88b74f492f89e21e4cf65353bdb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
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解答题-问答题
|
较易
(0.85)
【推荐2】(1)若关于
的不等式
的解集为
,求
,
.
(2)求关于
的不等式
的解集(其中
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be906fb86fba1e34954e30d792ddc6b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3432701dcc6000f25c5ea3a7937f2e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)求关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4396fd02c3a1caf2b86ff4117f3de9e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
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