已知
,关于
的不等式
的解集为
.
(1)当
是空集且方程
有解时,求实数
的取值范围;
(2)不等式
的解集记为集合
,若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f5cf2db0309f7dfce9aa6a4c47c2959.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6acb0f1ac694dd177e99fc385f23318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f86eff5761f61a20c240a428f2a7ceda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf9093e67bb937df85711d3ab08fb0d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b1703f1038fe86ff7d4f69b75a64fff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2022-12-15 19:12:59
|
相似题推荐
解答题-问答题
|
适中
(0.65)
名校
【推荐1】已知集合
,
.
(1)若
,求实数
的取值范围;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97af6fad038b3ff3fccdb4b47fd7967f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1446ee4288f5d3e66253f1b84b1c7.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf22d7d1a965bda25168a233fb6290c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea9a4259cca10c1f5af28e621ebafd6.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
【推荐2】已知函数y=x+
有如下性质:如果常数t>0,那么该函数在(0,
]上是减函数,在[
,+∞)上是增函数.
(1)已知(x)=
,x∈[0,1]利用上述性质,求函数f(x)的值域;
(2)对于(1)中的函数f(x)和函数g(x)=-x+2a.若对任意x1∈[0,1],总存在x2∈[0,1],使得g(x2)=f(x1)成立,求实数a的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8313789f58f1956228ab6777bb54756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a29bdf8023b9cc59b539226b892f5e7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a29bdf8023b9cc59b539226b892f5e7d.png)
(1)已知(x)=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53ed9c25160b24e865cb3b11a77ba5ea.png)
(2)对于(1)中的函数f(x)和函数g(x)=-x+2a.若对任意x1∈[0,1],总存在x2∈[0,1],使得g(x2)=f(x1)成立,求实数a的值.
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐1】设函数
.
(1)若不等式
的解集为
,求实数
、
的值;
(2)解不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24745bd5d41ebbaef66447bb8e0108b1.png)
(1)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bcc25e0fb65b0043365a471532c54c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5b59a0a9598b8924ab731e7a344cd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/030805eebb5ad0a065f93bd6f652f687.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】已知函数
,且
时,
.
(1)若
的解集为
,求
的取值范围;
(2)当
时,解不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c487a9c7546c65441534c24dd3e80f89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c6d79383c6503e1817378347afc66ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/672a83087961416762cf5d18a272ee96.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8abd2022e384664c32980cb1a78f1b49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fd9b9e8d4dc77e1d5d275af91075aa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/916bb2cc1b29574ff95b47567c59ee0c.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b74110bc818c2f5a53d63451c5251eb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b817338735d4c23394d6601a7ea4ce.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】已知二次函数
.
(1)若
的解集为
,且方程
有两个相等的根,求
解析式;
(2)若
,
且对任意实数
均有
成立,当
时,
是单调函数,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331d5e308cd5469e0f28a8d75f79903f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df4c41259a8724ef6a22eb3e540251e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a4165b22ce986fb4cfc67a2ea1e3916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb37ba6e483047cece740f7b22866114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a431537df789febf4bc45e3dc23cefaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a5d97796108992689f026b225e1470c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27ce93b9f0ea8d7e3a5e4a4f2fcacf45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.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】在
上定义运算:
已知命题
:不等式
对任意实数
恒成立;命题
:若不等式
对任意的
恒成立.若
为假命题,
为真命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294db97f979dad1a5d44df468094385c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dcf8bb4a017ad01f44347f0bca1d605.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c21d74cb6b5d1033578504383d6bc76e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a96119cc3005adf559140161bd872143.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeef4f4e6ea7046f48daa38618296eab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42648eda4568d288630db9b948ea3d87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次