已知函数
,关于
的不等式
的解集为
.
(1)求实数
,
的值;
(2)求关于
的不等式
的解集;
(3)若不等式
对
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/094919547e765350c588d83d41f36da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8b03af66c2b6d916b41321d7bb292f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/978db378a41f3cd1ff08daa5a772b011.png)
(1)求实数
![](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/445c49b7b4ad28e3f01f50e0124a59f8.png)
(3)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df3035a93ee714cb232b1ede03806e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa58350436d8e002805c4b5e443af639.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
更新时间:2021-12-10 23:08:02
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【推荐1】已知二次函数y=ax2+bx﹣a+2.
(1)若关于x的不等式ax2+bx﹣a+2>0的解集是{x|﹣1<x<3},求实数a,b的值;
(2)若b=2,a>0,解关于x的不等式ax2+bx﹣a+2>0.
(1)若关于x的不等式ax2+bx﹣a+2>0的解集是{x|﹣1<x<3},求实数a,b的值;
(2)若b=2,a>0,解关于x的不等式ax2+bx﹣a+2>0.
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【推荐2】已知关于
的不等式
的解集为
.
(1)求实数
,
的值;
(2)求关于
的不等式
(
为实数)的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90a5ca947510937415af64733ccde558.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/364a2e2de2634608334f94d5ffb6275e.png)
(1)求实数
![](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/ed999d0896dcc1313f29e3d8526dafb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
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【推荐1】已知不等式
的解集为
,不等式
的解集为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若不等式
的解集为
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26e52fa2cd9b62933d87929e25dd3573.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa6d0e2d93ab7777cf10cffe2307ece.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8023e1902803a7939d2aa32ba9e2d44f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
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【推荐2】请解决下列两个问题:
(1)求函数
的最小值;
(2)已知关于
的不等式
的解集为
,求关于
的不等式
0的解集.
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/215e6c532694c3b8245610ab8a78d1c5.png)
(2)已知关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfb56d9418f1a3cb2baa6b0c862010ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71a3619ccbcf65312754a970647014e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ffa2a9ba2b9faa88f6585606e180639.png)
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解题方法
【推荐1】已知命题
:不等式
对任意实数
恒成立;命题
:存在实数
满足
;命题
:不等式
有解.
(1)若
为真命题,求
的取值范围.
(2)若命题
为假,
为真,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b940c4c97f65502fca27214b54c8625.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095c5f7a3c6917839c01fd1e5654ee91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc481ffce7a83f0759ac58dbcf42a642.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b78c8f99f944c7329adf100bd5a4c9a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f298921c42c6339b179634ab366c3829.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5acbfca2d56e6b420bb83b7a39db4c9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
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(0.85)
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解题方法
【推荐2】已知幂函数
在
上单调递增.
(1)求
的解析式;
(2)若
在
上恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a7bf1276c91905f611398f29dded043.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f2cca773bda174e166f1fa3e67ded1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417ab20883d799aaf311371393fa7d7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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