已知
的定义域是
,对于定义域内任意的
都有
,且当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9bf472ab354dd7c46ecd60525c4968d.png)
(1)求证:
是偶函数
(2)求证:
在
上是增函数
(3)若
,求实数
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745ce7ed3d0f9695211f61c91f0cb0e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2efd6370d821a3806d1ad1b72143c43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9bf472ab354dd7c46ecd60525c4968d.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1fce155963060b2e5b9147a185897cc.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a3066901198275b5dcdcec1937e764a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2020-11-12 20:41:38
|
相似题推荐
解答题-问答题
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适中
(0.65)
【推荐1】已知函数
.
(1)用定义证明:
在区间
上是减函数;
(2)证明
为奇函数
(3)解不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87e12ac081934776ebd4a35d989eddfd.png)
(1)用定义证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455ba3d3e46977fcbe5b71f8bb9df4be.png)
(2)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a669b7345ccfe4cfbe6de2765f1fd74.png)
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解答题-证明题
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适中
(0.65)
名校
【推荐2】已知函数
是定义在
上的奇函数,且
.
(1)求实数
和
的值;
(2)判断函数
在
上的单调性,并证明你的结论;
(3)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ca9316b68408cbbcf494b67628c8ea8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b61bb7cb94b4d06f0090df1e365667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6e1d05a7f35bacac019a975ff11724c.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b61bb7cb94b4d06f0090df1e365667.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f482dc36a8b0e2d7cd0d8b86aa4e6035.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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解答题-证明题
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适中
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名校
解题方法
【推荐1】定义在R上的函数
满足:对任意x、
都有
.
(1)求证:函数
是奇函数;
(2)如果当
时,有
,求证:
在
上是单调递减函数;
(3)在满足条件(2)求不等式
的a的集合.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f370a1d4dd341e5ab1774a66c66c1204.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49074b2fc18e7edb1b3b6b4e6f9737c9.png)
(1)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)如果当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b12f2ff24c52fded1dfd0f0b6940a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455ba3d3e46977fcbe5b71f8bb9df4be.png)
(3)在满足条件(2)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/644fc3550e878e68cbc67e8e7faca644.png)
您最近一年使用:0次
解答题-证明题
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适中
(0.65)
名校
解题方法
【推荐2】已知函数
是定义在
上的奇函数,且它的图象关于直线
对称.
(1)求证:
是周期为4的周期函数;
(2)若
,求
时,函数
的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/259021cab81ab5624352393705a2cffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4f5f8adbdf029b4096f85a332e9b1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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解答题-问答题
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适中
(0.65)
名校
【推荐1】已知二次函数
.
(1)若该二次函数有两个互为相反数的零点,解不等式
;
(2)若关于x的方程
的两个实根均大于
且小于4,求实数t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02aa6c1de273accb684ef02416dd9952.png)
(1)若该二次函数有两个互为相反数的零点,解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa860d908d31cf54b9190c67133ad3c.png)
(2)若关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f37500ba54b08dcea0ee0486b12efc82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
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解题方法
【推荐2】(1)求不等式
的解集;
(2)解不等式:
;
(3)关于
的不等式
的解集为
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/890d0cfcd6dfa74fd2ce6e6afb5c0140.png)
(2)解不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/113c4199c1424c2b652663a3b4d09ee2.png)
(3)关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abdea09520a9022a2f1e07bf12afe6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.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
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(0.65)
名校
【推荐3】已知关于
的函数
.
(1)当
时,求不等式
的解集;
(2)若
对任意的
恒成立,求实数
的取值范围;
(3)二次函数
在区间
上单调递增,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27145091523fc17def346f0e03fdd35d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b624d88827e92e12bc0a8f1067cbe72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9037e589742d44dea35b511f5462bbac.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9037e589742d44dea35b511f5462bbac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)二次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27145091523fc17def346f0e03fdd35d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d6243e93c41978871cb23d8e66148d.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
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适中
(0.65)
名校
解题方法
【推荐1】已知函数
为R上的奇函数.
(1)求
的值,并用定义证明函数
的单调性;
(2)求不等式
的解集;
(3)设
,若对任意的
,总存在
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783184ba489227bf41af54dc4ab080f1.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4af8ab5c2d5c608046121880a95ef86.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c00e3b48d3d8d52ea09edae3aee8bcda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1760522e30613a463766f77d936429e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8749f112832287b0738dd83c5bf255d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f3bb43da17137e6c50874a8086df278.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
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适中
(0.65)
【推荐2】已知函数
是定义域为
的单调增函数.
(1)比较
与
的大小;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(1)比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce639e4421cb65ecef39141385d6c171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64643995c3775f99cb5df2ea234ca43e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f3044d47c966c58cde34e7a23197bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
【推荐3】设函数
.
(1)证明:函数
在
上单调递增;
(2)解不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/043ec2da3fba11bcfe5a51d5ee2980f1.png)
(1)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75e1b05befa58e73163f3909b8f1660d.png)
(2)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b80c3249f60481548778c46d4d5f80.png)
您最近一年使用:0次