若存在正数
使
成立,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/20c4eda93081f48d2f7cab467444fbde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2019-12-11 11:25:13
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填空题-双空题
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适中
(0.65)
解题方法
【推荐1】已知函数
,
,则不等式
的解集是________ ,方程
的实数根的个数为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7216cd21dda85a439c9c13fd142e81c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13344186992840550aeafefac61000c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feeb7c1e20a6bc51446c7caab7d5d20f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9887ca9caec757da24a3ff81e40ab7f.png)
您最近一年使用:0次
填空题-单空题
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适中
(0.65)
名校
解题方法
【推荐2】已知
为奇函数,当
时,
,且
关于直线
对称,设
的正数解依次为
、
、
、
、
、
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1245c7633f46a29d5dd9269b77e8487.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcac1e85463a3177f487d896b3d1d24c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64263fe2ca48e694c87496d61e63fb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26af862ac8e4e2fe03204b0463a7a789.png)
![](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/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e5531913e2f170465d8df01795cd51.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e5531913e2f170465d8df01795cd51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1245c7633f46a29d5dd9269b77e8487.png)
您最近一年使用:0次
填空题-单空题
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适中
(0.65)
解题方法
【推荐1】已知等比数列
的前
项和为
,且满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a7bdc7a2d0309f601e3a79e989b5f33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
您最近一年使用:0次
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适中
(0.65)
名校
【推荐2】若行列式
的展开式的绝对值小于6的解集为(-1,2),则实数a等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0130cb517a205e199ccefc52121de856.png)
您最近一年使用:0次