已知函数
(
,
),且
.
(1)求a的值,并判定
在定义域内的单调性,请说明理由;
(2)对于
,
恒成立,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54d113c52014ba84271a36103e2f039d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f49c4a4dbb963482889afe3ea64ee24.png)
(1)求a的值,并判定
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d0b969f58a09dff5c32b43219e2080.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5859f6d7283fb021e799c2504273bc1d.png)
19-20高一上·四川资阳·期末 查看更多[3]
四川省资阳市2019-2020学年高一上学期期末数学试题(已下线)第四章++对数运算与对数函数(能力提升)-2020-2021学年高一数学单元测试定心卷(北师大2019版必修第一册)(已下线)专题02 恒成立、能成立问题 (1)
更新时间:2020-09-09 12:49:30
|
相似题推荐
【推荐1】已知各项均为正数的数列
满足
,且
.
(1)求
的通项公式;
(2)若
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aa7d1e167b1994c3ab302d5ae7619af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef7146e23c331b74ed9c9bb76b2e9364.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b2aca577d89a099fb7156ad0b944846.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
【推荐2】已知数列
的首项
,
,
.
(1)证明:
为等比数列;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3bba7c8baee93338f04ef157f54b885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/878b4bc8b23c9f486874016f32221333.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e2de706dc5f0439b989273a5367f63a.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf08ad41e92e60de68469f87ef309d24.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐1】已知函数
.
(1)若
,求实数a的值;
(2)若
,且
,求
的值;
(3)若函数
在
的最大值与最小值之和为2,求实数a的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94a7892bfe3506d64d3bebe71f66604.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f57457379efecec3a8f98377bc5c65d5.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d41acc47493556617fe7b9e55093d10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859458471c86ae39e0cc42d2d960d03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ceddc345bfa05b7c0c61ec02470188a.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/857da1da5309ba6d5fd2edec50af33b7.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2】求函数
的定义域、值域和单调区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e489cad64082409abdbe934ae43ae73.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐3】已知函数
.
(1)若
,求
的单调区间及值域;
(2)若
的定义域为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b950e6d4b4ed7b3f0dea71554ba63615.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/933093b52cca887f597cbe22a5467b11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次