解题方法
1 . 命题
:函数
在
上是减函数;命题
:不等式
的解集为
;若命题
为真命题,
为假命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13f023c8923cba991030b0b2b50e4495.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95169f7287a6a0c9b6917eb2ceb245eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ab4a71533c5410159769aa0fc6bd67d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2 . 已知函数
.
(1)当
时,求不等式
的解集;
(2)若函数
的图象与
轴有两个交点,且两交点之间的距离不超过5,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f8891ef3336dca14f2030e2bdf11485.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2019-10-29更新
|
258次组卷
|
2卷引用:山西省2019-2020学年高二上学期10月联合考试数学(理)试题
名校
3 . 已知函数
,不等式
的解集为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49f86fae82191738f96f0a5b2b6f1d4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3432701dcc6000f25c5ea3a7937f2e7e.png)
(1)求不等式的解集;
(2)当在
上具有单调性,求
的取值范围.
您最近一年使用:0次
2018-11-06更新
|
1016次组卷
|
4卷引用:江西省上饶中学2018-2019学年高二上学期期中考试数学试题1
4 . 命题p:关于x的不等式
的解集是空集,命题q:已知二次函数
满足
,且当
时,最大值是2,若命题 “p且q”是假,“p或q”是真,求实数a的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/9/21/1573035383857152/1573035389902848/STEM/f634b7ed7d764d7d9061eee6671999fb.png)
![](https://img.xkw.com/dksih/QBM/2016/9/21/1573035383857152/1573035389902848/STEM/e454e9af93f548babafcb4396eab8cf7.png)
![](https://img.xkw.com/dksih/QBM/2016/9/21/1573035383857152/1573035389902848/STEM/35a5de4884094ee597f9cb8cd026d37c.png)
![](https://img.xkw.com/dksih/QBM/2016/9/21/1573035383857152/1573035389902848/STEM/5b9a8b43e613416caa0fce3b4ab0029e.png)
您最近一年使用:0次