解题方法
1 . 函数
的定义域为
,若存在正实数
,对任意的
,总有
,则称函数
具有性质
.
(1)分别判断函数
与
是否具有性质
,并说明理由;
(2)已知
为二次函数,若存在正实数
,使得函数
具有性质
.求证:
是偶函数;
(3)已知
为给定的正实数,若函数
具有性质
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02cab1add26335b3cb43d5b54c7c853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2688c3e4089a131193925f8366b108c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d46bf6ded2f869744c6c50785f974aa6.png)
(1)分别判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccbd0d2acb9d499719f4ff04334e94cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/253893d2bf2b944a6de271463c3e7929.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d8f894492a8126f5f133dec4cd68833.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d46bf6ded2f869744c6c50785f974aa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0f1237b460eca4e05b88832844b22ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5606f53ddd9b02fb3c683f3b48fd861.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d46bf6ded2f869744c6c50785f974aa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
2 . 已知函数
.
(1)记集合
,若
,求证:
;
(2)设函数
,若存在实数
,使
,求实数
取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041d7fe67bbac3c33cf518b569e0db62.png)
(1)记集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b8ceab71f602458b1ef071c778ff31f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30f586ebc64ac4c87b1ceed35c8bdb7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/530d3bb7d7268d51194c09198531f19a.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f750d5d121271c431f35164f2f87212c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc9176a9d1bf52fd1b4e58b88c46032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2022-12-18更新
|
819次组卷
|
2卷引用:江苏省南通中学2022-2023学年高一上学期第二次月考数学试题
名校
3 . 已知函数
.
(1)若
,是否存在a
,使
为偶函数,如果存在,请举例并证明,如果不存在,请说明理由;
(2)若
,判断
在
上的单调性,并用定义证明;
(3)已知
,存在
,对任意
,都有
成立,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6e73422d2197a5a71769436381b7229.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39c1fd1da3a9e6465bb3b66894120b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5500ad00466c3f2ff8ba691f2653e6bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dd456469aaa6dafb1e275183d217435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4438620ff101b83aef035104db1a6e79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85a1f815b0e0b6516b684a93e1850667.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e424a9e6b2505aad5eb944b00f5222bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a76d0c6032c22c5d435968f414e506cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e9956260c9412f340df7addda6707f3.png)
您最近一年使用:0次
2022-03-14更新
|
1232次组卷
|
3卷引用:湖南省长沙市第一中学2021-2022学年高一下学期入学考试数学试题
名校
解题方法
4 . 已知函数
对任意的实数m,n都有
,且当
时,有
恒成立.
(1)求
的值;
(2)求证
在R上为增函数;
(3)若
,
,对任意的
,则关于x的不等式
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/053e4e1dc1431145c998c014b8fc0c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be1d8c6384d7fabddb693b2b7fcdf4a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e38fffbc7ab9882480f4faa72390e23.png)
(2)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9bf4ec57e9172349be55e4527214acc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2188e898a6af08a1e4f4001001194bfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab099277f1ca651f5acca46ca054844c.png)
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名校
5 . 定义区间
的长度均为
,其中![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa403daf6f8420dcefeea93fec41798c.png)
(1)若函数
的定义域为
值域为
写出区间长度
的最大值;
(2)若关于
的不等式组
的解集构成的各区间长度和为6,求实数
的取值范围;
(3)已知
求证:关于
的不等式
的解集构成的各区间的长度和为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddc5d7657fd10839719b593b12d12e60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08d9560a5a060961e957ffeff10a29aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa403daf6f8420dcefeea93fec41798c.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/927adc3ef749d09e76374ffbd7c50da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75af93e9c237ee52e258aa48a4a55649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd8936e3646db9171519b41c08c16391.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ac502f3aadb3b15abf4aa7368b7f5b8.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b07b34bade7a10c5ecc1febbf0829912.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7efe337fed3335419338c68b92c50e0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab381e4696b228db83ba14f9dca29011.png)
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