已知函数
且关于x的方程
有且只有一个实根,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51b673b0e9f27e733158ee9ff20cae2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f6942cccad9b754c0ebdb7bacd8a3ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
2021高一·全国·专题练习 查看更多[2]
更新时间:2022-01-05 11:04:19
|
相似题推荐
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】已知函数
,判断该函数的零点个数,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c77d9ea0a17fe4198a68bc849659cf36.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】已知关于
的方程
.
(1)若此方程在
上有实数根,求实数
的取值范围;
(2)设
,
是方程
两实根.
①求实数
的取值范围,并计算
的值;
②若
,求实数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7834b4c8309f67c5b7a417a3a06e972.png)
(1)若此方程在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589ed49839c4dc0b033431d88a4c1f94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设
![](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/dd9075906403e61e4c36ace6e7069d6e.png)
①求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20fef976a0230bdfe3bc758e93987ba8.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6639e66ef7abb4c36139438c3013e61b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】已知函数
.
(1)判断函数
的奇偶性,并说明理由;
(2)若函数
在区间
上有两个零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af99aacab60bcce27dfa84a30b20450.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f190992c0484aa8e6dd76a2b1d7a78ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/941ef78db4729e16d5fa3759d15d615f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】已知
,
.
(1)若方程
有三个解,试求实数
的取值范围;
(2)是否存在实数
,
(
),使函数
的定义域与值域均为
?若存在,求出所有的区间
,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19a7b56bc9213492bebd89d18a640de6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(1)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa279306676cbc09ddcb9ff6f991a07a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb7961cbe98aac6a5fdee94582c341b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320cba4d29e050a7e9f4e3b24bdbbc86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320cba4d29e050a7e9f4e3b24bdbbc86.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐3】已知函数
.
(1)当
时,求曲线
在点
处的切线方程;
(2)设
,若
恒成立,求实数a的取值范围;
(3)若
有两个零点,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662320b48f754f097bbd380f57699433.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15177faca3fb20d0b0d25e5e4d735cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f15318d2d6664ecdf81180baf70a0c71.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次