1 .
的边分别为a,b,c,且满足
,则
的取值范围为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ff214d99784c6b23b7784bdaf3ed37a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/399461908ddad512b53d04d80f4ca580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c51967992d093c51c7d28c46e3840a95.png)
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2019高一·浙江·专题练习
解题方法
2 . 设a为实数,函数
.
(1)若
,求实数a的取值范围;
(2)当
时,讨论方程
在R上的解的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcfb45098215eef25d713c23a97443a3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e412bea81e1f6b601c7ffec153a1f5d.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6455e38ff53ede2508e4d9cb23f0b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ff0bf39c337b741c2de0047b2c65384.png)
您最近一年使用:0次
名校
解题方法
3 . 已知函数
,若
的最小值与
的最小值相等,则实数b的取值范围是____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058068d12ebbef278e36d35e1fe05ede.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e56e3224d58e0cfd256493f3fc63df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
2020-02-24更新
|
479次组卷
|
2卷引用:浙江省丽水市2018-2019学年高一上学期期末数学试题
4 . 已知函数
(
),设函数
在区间
上的最大值为
.
(1)若
,求
的值;
(2)若
对任意的
恒成立,试求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14a8afa12e1acaa4f75628ebdedda202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d90e1dc4714287648d0bebcac913ded7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f180284f64b34de272846b2613c5db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d188ec2580e273ce87e51653a2177ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71eda28755639d00f9d24b95679d9496.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/844379f6794dfe567fcd7a0a73b81540.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9a475fec8ded321e10a6697319fb975.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
解题方法
5 . 已知函数
,
(1)当
时,若
且
,证明:
;
(2)当
时,若
恒成立,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdf69b4d0d110205b2024430b670446c.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b70f8691af2a1d287aa5c476ede5e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbf8da534490147db4fee75f71a4c19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f774df9caef9535f3506730284183738.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6343069217cd6d8dd32446da428dae46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d026de72fab7e92f39f461e41be3a15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/219ba6c8a1b54598db1a78cab28d9d30.png)
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6 . 已知函数
.
(1)当
时,求
的值域;
(2)当
时,求函数
在区间
上的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90dc2b2bc064ad3797787e51a8051dcd.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bdfed8d6862125dc1fecfce0322a750.png)
您最近一年使用:0次
7 . 已知函数f(x)=x2+ax+b,实数x1,x2满足x1∈(a-1,a),x2∈(a+1,a+2).
(Ⅰ)若a<-
,求证:f(x1)>f(x2);
(Ⅱ)若f(x1)=f(x2)=0,求b-2a的取值范围.
(Ⅰ)若a<-
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d0e7bfbd56fe73dfe04c04da749d942.png)
(Ⅱ)若f(x1)=f(x2)=0,求b-2a的取值范围.
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