设函数
,且
,求证:函数
在
内至少有一个零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ec07c981610b92888e0e2bae408d39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/066e7701f06030b395f4de4bd13bc90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b094cba781181aeb90752170e9ba6c94.png)
更新时间:2020-02-07 10:45:17
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解答题-作图题
|
较易
(0.85)
名校
解题方法
【推荐1】已知二次函数的图像经过点
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0babd7f360a017f68e717fcc7ad8b5b1.png)
(2)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a57458464618fcf619375a93d3c66d69.png)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
解题方法
【推荐1】已知函数
,且
的图象经过点
.
(1)求
的值;
(2)求
在区间
上的最小值;
(3)若
,求证:
在区间
内存在零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20cae47ad50ac506ced900f0a5156c97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37fa1476cf3552b9ae91ef039b1c6c80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e449b1f99ffce3e617ba528283a22de.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc548dc9512f29922c422da279b3de18.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e111595ac59e1fb558b6a465a02829.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2a5e336b6bcba6354fd366c892dd06.png)
您最近一年使用:0次