已知关于x的方程
在区间
上有实根,那么
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b576b8c02e7279923cef855ac13d1295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a248e47163191168a1b363937eebd618.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce388fbfaa60714060fa427866e16e4.png)
2022·安徽合肥·模拟预测 查看更多[3]
更新时间:2022-05-31 23:34:40
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相似题推荐
填空题-单空题
|
较易
(0.85)
名校
解题方法
【推荐1】给出下列结论:
①
; ②
,
的值域是
;
③幂函数图象一定不过第四象限;
④函数
的图象过定点
;
⑤若
则
的值是
.
其中正确的序号是_________ .
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48a4787ba19e760a21af42482dd37e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ececfceb4ae9520f5479563123c297c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e28e45dd4cefbbbe59f349d3a251f895.png)
③幂函数图象一定不过第四象限;
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c75988bfcea17802cc83008e39b8f94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b334e2eaa7e8fb79cef8208b56ee4f5.png)
⑤若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a05c7f3e453cfa254690316de696f91f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51834f008dc25acdf102c3b6021a26ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f83dbfddc6f98548699ed581e8c8608.png)
其中正确的序号是
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
名校
解题方法
【推荐2】已知函数
给出下列4个命题:①当且仅当
时,
是偶函数;②函数
一定存在零点;③函数在区间
上单调递减;④当
时,函数
的最小值为
,那么所有真命题的序号是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50134a2d2ad1194951fea14752316b09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c82d5412ab55ca7f19ad35815192408.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611aa2dc2409515b464a3bba9ba8c4ca.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
【推荐1】设
,关于
的方程
有两实数根
,
,且
,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c37a89b232368e21370bd62740b977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9565876bc50bceb63e5793c8c67a9032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44606333d2afc5aadf5f58ba2e6de5a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
【推荐2】若关于
的方程
在区间
上有实数根,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06295591972865ce5a2fafb1427aa707.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2ec965488c7e1cea085463c7731285.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次