已知二次函数
的最小值为
.
(1)若
,求
的值;
(2)设关于
的方程
的两个根分别为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0abfd04f8105daef57bf83758c4ae3d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0268e85df43d66b031e0eccb11284452.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8fc9f587b7fdb668e3c855da1b8282e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b92b70365c63607daecdc8deb73ecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6abf3f9b0ebcdc47a028c781b7edb9.png)
更新时间:2023-12-20 14:07:46
|
相似题推荐
解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐2】已知函数
.
(1)当
,求函数
的最小值
;
(2)是否存在实数
、
,使得函数
的定义域为
,值域为
?若存在,求出
、
的值;若不存在,则说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64cc8e0bba95bd9cb946cd22ba092240.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1591d4244dcf5539a4ae98f554e91e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a1c1f0951b6032791da53d313449d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a90170d7ef5ff6d1d63517c166f7a9.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd55400929c757f6f55f87e0e3d52df1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b85a97933a1d984f6e484b4021c800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe66b327f503b14b2ddc5260de454da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐1】已知关于
的方程
(其中
均为实数)有两个不等实根
.
(1)若
,求
的取值范围;
(2)若
为两个整数根,
为整数,且
,求
;
(3)若
满足
,且
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2df5aaad0ade6e7bba2d52a5b5a71674.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c8528870cc9de86a2d4adde30911b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f880b35942891d2512247d53030c742.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/916f4fc53db7d0603fde540c3af51d39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef35f2b847ac68b9f339e4d5946881b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐2】已知关于
的一元二次方程
.
(1)证明:无论
取什么实数值,这个方程总有两个不相等的实数根;
(2)若这个方程的两个实数根
,
满足
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db1353ab6f1d32323f56ca9050a42352.png)
(1)证明:无论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若这个方程的两个实数根
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a7fa6088ad9583a7b490ee076f1d9f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次