1 . 已知函数
.
①若
有且只有
个实根,则实数
的取值范围是__________ .
②若关于
的方程
有且只有
个不同的实根,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3901c28b4294b442aa4329397bdf089f.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc231c399eaba3ac0c3593ca0a362f1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
②若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b255194835f64503043a38e7be2a77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
您最近一年使用:0次
2017-05-07更新
|
653次组卷
|
2卷引用:北京市东城区2017届高三5月综合练习(二模)数学理试题
名校
2 . 已知当
,
表示不超过
的最大整数,称
为取整函数,例如
,若
,且偶函数
,则方程
的所有解之和为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ab85825d4a002600ca41bd3cd2ee7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7e3204e4dc47a448860779349efcedf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2905e5618fac640312eaa42845bab98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aacac2cf1dd70cc65b1ca535a32c316.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a2261b835b12c4b0bb109283650767.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d59fc3e1b9f54dd47e40cc74c32242df.png)
您最近一年使用:0次
3 . 已知函数
若关于
的方程
有两个不同的实数根,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31d82be700a8dde26bea167e833fcb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77be3ccb3bf0d6133db99ce8ba898839.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2016-12-04更新
|
286次组卷
|
3卷引用:2017届江苏苏州市高三暑假自主学习测试数学试卷
2017届江苏苏州市高三暑假自主学习测试数学试卷(已下线)《2018届优等生百日闯关系列》【江苏版】专题一 第一关 以零点为背景的填空题黑龙江省牡丹江市第一高级中学2020届高三上学期开学检测数学(理)试题
解题方法
4 . 已知函数
,若函数
有三个零点,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba00b125522f0ace56d86be25fd7cf30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b946a8ec829a341aa6806a3eb0b9ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
5 . 用
表示
,
两数中的最小值,若函数
的递增区间为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6323f3d42a8c329f1231a4183cca21c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/878aafcb299e9a59c901a98fa20c49d5.png)
您最近一年使用:0次
6 . 已知函数
则函数
的零点个数为 个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6027df2155b70d2f610535dc7097b2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e55d26f79b3bf008aa5ca4478a7ea85.png)
您最近一年使用:0次
解题方法
7 . 已知函数
,设方程
的四个实根从小到大依次
,对于满足条件的任意一组实根,下列判断中正确的为__________ .(请填所有正确命题的序号)
(1)
或
;
(2)
且
;
(3)
或
;
(4)
且
.
![](https://img.xkw.com/dksih/QBM/2016/1/22/1572463192342528/1572463197954048/STEM/e65d99c9f3af496aa56355b26b074aaa.png?resizew=175)
![](https://img.xkw.com/dksih/QBM/2016/1/22/1572463192342528/1572463197954048/STEM/6d78ce0aa30f49368db62cfe3fef2955.png?resizew=140)
![](https://img.xkw.com/dksih/QBM/2016/1/22/1572463192342528/1572463197954048/STEM/a7b382c7249b40b2ab90168d150c36c9.png?resizew=75)
(1)
![](https://img.xkw.com/dksih/QBM/2016/1/22/1572463192342528/1572463197954048/STEM/787195289b94429c8321619c40a8af7e.png?resizew=75)
![](https://img.xkw.com/dksih/QBM/2016/1/22/1572463192342528/1572463197954048/STEM/313aec82a1eb47259e2e1cdf75cead54.png?resizew=147)
(2)
![](https://img.xkw.com/dksih/QBM/2016/1/22/1572463192342528/1572463197954048/STEM/787195289b94429c8321619c40a8af7e.png?resizew=75)
![](https://img.xkw.com/dksih/QBM/2016/1/22/1572463192342528/1572463197954048/STEM/d9542396f2d442bba372e11a4d04329d.png?resizew=124)
(3)
![](https://img.xkw.com/dksih/QBM/2016/1/22/1572463192342528/1572463197954048/STEM/901b37b9a68d418fbed8f41e4dd0b233.png?resizew=75)
![](https://img.xkw.com/dksih/QBM/2016/1/22/1572463192342528/1572463197954048/STEM/a286ccb16a0f4328a33e7e2a1b134416.png?resizew=87)
(4)
![](https://img.xkw.com/dksih/QBM/2016/1/22/1572463192342528/1572463197954048/STEM/901b37b9a68d418fbed8f41e4dd0b233.png?resizew=75)
![](https://img.xkw.com/dksih/QBM/2016/1/22/1572463192342528/1572463197954048/STEM/9c316de103e340f68b2e6c9f2c8f9832.png?resizew=95)
您最近一年使用:0次
解题方法
8 . 已知函数
满足![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898092544/STEM/c666655d2d314c6a882d16da81ae34b6.png?resizew=57)
,且![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898092544/STEM/60766676cb39468d9d2e821651d82cd5.png?resizew=72)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898092544/STEM/09b391e0880c4da5bcee49557d6c8cea.png?resizew=36)
,当
时,
,那么在区间
内,关于
的方程
且
恰有4个不同的根,则
的取值范围是________ .
![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898092544/STEM/09b391e0880c4da5bcee49557d6c8cea.png?resizew=36)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898092544/STEM/c666655d2d314c6a882d16da81ae34b6.png?resizew=57)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898092544/STEM/09b391e0880c4da5bcee49557d6c8cea.png?resizew=36)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898092544/STEM/60766676cb39468d9d2e821651d82cd5.png?resizew=72)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898092544/STEM/09b391e0880c4da5bcee49557d6c8cea.png?resizew=36)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898092544/STEM/5a659e25f7d841e38a7986ba0a63c7ee.png?resizew=48)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898092544/STEM/aada3cfb117747a388c53032b9c62f1e.png?resizew=56)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898092544/STEM/b2847b2e6f4c41cf97174ba25f0150a9.png?resizew=61)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898092544/STEM/8ce0e1bc543f4d91922e0c3490070307.png?resizew=41)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898092544/STEM/0cec58fa79b8448ca1c1249e77cdeea3.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898092544/STEM/9112876bfbd047059415949d9832f994.png?resizew=153)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898092544/STEM/1c5b1983d2fd4c70835baf1292d759d7.png?resizew=52)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898092544/STEM/b2026f0ea2274ce88e62f84df74d3724.png?resizew=13)
您最近一年使用:0次
2016-12-04更新
|
720次组卷
|
2卷引用:2016届云南师范大附中高考适应性月考三理科数学试卷
名校
9 . 设函数
,对任意实数
,关于
的方程
总有实数根,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72769bda4cc318a37c4735e48ee0b45e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69d7eeb37cdcbf570e932e0614603238.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2016-12-03更新
|
619次组卷
|
3卷引用:2015届北京市海淀区高三下学期期中练习(一模)文科数学试卷
解题方法
10 . 已知函数
,若
,且
则
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4a29248d0351e152cff3c2a4cc0d287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b73abfe4bc26b1ded680d7abb1a2cac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f5ce5e53ebca27b3041e36abbc6b9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25ea6e9fd8a0e965745e6427feb6ad02.png)
您最近一年使用:0次