已知函数
(m∈R).
(1)若对
恒成立,求m的取值范围;
(2)求证:
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ed226865b2338bc5cb3ec33bbbb2c96.png)
(1)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/215499f8e695cb36be622b177cf68247.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1278e6fd6266a7dc9c39b10260db642.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b080571994f2739ef1d359192e981d9.png)
更新时间:2020-03-17 16:12:39
|
相似题推荐
解答题-问答题
|
适中
(0.65)
名校
【推荐1】已知函数
.
(1)若
时函数
有三个互不相同的零点,求实数
的取值范围;
(2)若对任意的
,不等式
在
上恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77256a680fa3359c213cb65d2f9b8ccf.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b06282ad603b7a56f22bb084ecc365aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9e33cefeb6cb55d398174b999dc456b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66d61d5f66d68b4c4a2a25fd7103621.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ead3fdcb8fe8f5eb3dbe7d96cabc28b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d471d7c65aa2d7b113318288f8dc5302.png)
(1)若
,讨论
的单调性;
(2)当
时,
的最小值为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d471d7c65aa2d7b113318288f8dc5302.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b6b0a9dc8e28b1860047e802f920856.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.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,并证明;
(2)若对于任意
,不等式
恒成立,求正实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d3203dd316a77d2087634112d4e6f36.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56b44c7dc65bc4730dcf55ad337a0521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/956541bca207fa886e0920a4f9fdb421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】已知函数f(x)=ax﹣sinx(a∈R).
(1)当
时,f(x)
0恒成立,求正实数a的取值范围;
(2)当a≥1时,探索函数F(x)
f(x)﹣cosx+a﹣1在(0,π)上的零点个数,并说明理由.
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ad63be07164effd9fb1e9ec3679015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff7942da6c3fc4005256fb1458557c0.png)
(2)当a≥1时,探索函数F(x)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐3】已知函数
.
(1)当
时,求函数
的最小值;
(2)若关于x的不等式
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6595e3381d444ae03f7f7d3dddc4c6b.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72783508bf4e9e233435ae4c64950f23.png)
您最近一年使用:0次