名校
1 . 已知函数
为偶函数.
(1)求实数
的值;
(2)求函数
的值域;
(3)若函数
,
,那么是否存在实数
,使得
的最小值为1?若存在,求出
的值,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b536e2b017b0c91559d010492fb3ac0.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/258697d07a2c14a3c3a0e89f4b68ed85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c65f28c9cd7fa274d91ac33904d93b02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
2 . 已知二次函数
.
(1)若对于任意
,且
为偶函数,求
;
(2)设
为函数
与x轴的两个交点的横坐标,且
,
,且当
时,
的最小值为
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c035b8e60e79f90257e464ac6d5a060b.png)
(1)若对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37f567efa4faa6de6cd98808df99c238.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb19d43bf321e4019573260f189a7fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c035b8e60e79f90257e464ac6d5a060b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f184ef9e0d57554e95f369c9d4bbfea1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7afd9e226c9e45f674286910bc495e0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c2ea39915aad1d3b55babc34636ef3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a11f65c626db6450234cb130a091b766.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f7968a9dafa18e1ae7138cae785c92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f7968a9dafa18e1ae7138cae785c92.png)
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3 . 定义:若函数
在其定义域内存在实数
,使
,则称
是
的一个不动点.已知函数
.
(1)当
时,求函数
的不动点;
(2)若对任意的实数
,函数
恒有两个不动点,求
的取值范围;
(3)在(2)的条件下,若
图象上两个点
的横坐标是函数
的不动点,且
的中点
在函数
的图象上,求
的最小值.(注:两个点
的中点
的坐标公式为
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66f66a2b3d90f0d935d6c8ebaf675349.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a3ff59c7595f9a810a419f964af12d5.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e76fa77d1b0bc4c1af9c8c41bf0dabe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若对任意的实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d8194c647746b72b3653fde39a7a3d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/031da5d48fbe63745429b1add253344f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b6c72f3daeb8af26c7fb806ae623e8d.png)
您最近一年使用:0次
名校
解题方法
4 . 已知
,
.
(1)判断函数
的单调性,并用定义证明你的结论.
(2)若对
,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea366268bda7a58cace1afb754b18788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f20a2335a52cd1d06122940d1dac07aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce728ad36353c7b36af5d78ea6ab0b4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
解题方法
5 . 我们知道
与
(
且
)互为反函数,它们具有以下性质:①图象关于直线
对称;②
的定义域是
的值域,
的值域是
的定义域,反之亦然;③若点
在函数
的图象上,则点
一定在函数
的图象上.
(1)若函数
与
互为反函数,求实数a,b的值;
(2)运用(1)题中得到的函数
,若对
,使得
成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da53929a8f67b9aa3827fdbd73ebd265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82869dad28f771d088772a2c2b08b187.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/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da53929a8f67b9aa3827fdbd73ebd265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82869dad28f771d088772a2c2b08b187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da53929a8f67b9aa3827fdbd73ebd265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82869dad28f771d088772a2c2b08b187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a64d924836b4292239d9726c6473d7f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da53929a8f67b9aa3827fdbd73ebd265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/493d16a261e909d2faf6b5386b8fa5d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82869dad28f771d088772a2c2b08b187.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bab3a3d264dba79d3e2995bec4ad3ea5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb1a3f631ea291a932f4bc466556a2c1.png)
(2)运用(1)题中得到的函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c0ed188d083966baaae94e6b86064f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976472fb4679ad2d8ec2f928f684650b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d25a5b1e41c9fa76ece3b27d81b0e8f.png)
您最近一年使用:0次
6 . 已知函数
是偶函数,且
,
.
(1)当
时,求函数
的值域;
(2)设
,
,求函数
的最小值
;
(3)设
,对于(2)中的
,是否存在实数
,使得关于
的方程
在
时有且只有一个解?若存在,求出实数
的取值范围;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3067e2ce6964dd8a4657f33ff1020e42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87be090ba8340348b4894c0ad1ce3662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f76a0407dc64862b341524e8f3d7164.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0eac2b31a19918895e5af2d316490e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df0a357d2b5b8a4762b35cd999a0185a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0eac2b31a19918895e5af2d316490e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aeae227ddcd963101c96448b12a69d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9248f8b5bc8c31bce7da86983b6c155e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a65f98fb31af1299a4d4b31d67a240b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
7 . 已知抛物线C:
的焦点为F,圆M:
.点
是抛物线C上一点,
(1)求抛物线C的标准方程;
(2)若点P在圆M上,PA,PB是C的两条切线,A,B是切点,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b35f0b940c8422ef47edc3b7ce55e47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71c557334863e42b9df4f79cd97bfdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceadd21e8eb0f48c059a5947f5698378.png)
(1)求抛物线C的标准方程;
(2)若点P在圆M上,PA,PB是C的两条切线,A,B是切点,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
您最近一年使用:0次
名校
8 . 已知
.
(1)函数
,若方程
在
上有四个不相等的实数根,求实数
的取值范围;
(2)若函数
的定义域为
,求函数
的最值;
(3)
,
,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2215ece47e22ff5f4ae6fa8f77fe1636.png)
(1)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b219a1b11eb102584fd0f0fe8bbc79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee28bae43b4379c6ecc24cb9d6fc08f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bf60920999ce2898351a6743f292dc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed7b42c950cff6bed2645e7de5511d4.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad5fe274cfc8da2dacfb65801f344ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f61d83798b4ea9dde9f998bd84a51966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/204266c38a1577cff768b2aa60b1a300.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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名校
9 . 某基建公司年初以100万元购进一辆挖掘机,以每年22万元的价格出租给工程队.基建公司负责挖掘机的维护,第一年维护费为2万元,随着机器磨损,以后每年的维护费比上一年多2万元,同时该机器第
(
,
)年末,可以以
万元的价格出售.提示:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f1fd1831bd207e872795da9568a91b3.png)
(1)写出基建公司到第
年末所得总利润
(万元)关于
(年)的函数解析式,并求其最大值;
(2)为使经济效益最大化,即年平均利润最大,基建公司应在第几年末出售挖掘机?说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4936e8549d7f95c3b1915c6111815a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b8093c05bc5fa5d204614fba28ef932.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecd5778dbad776272269787642bf5eb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f1fd1831bd207e872795da9568a91b3.png)
(1)写出基建公司到第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)为使经济效益最大化,即年平均利润最大,基建公司应在第几年末出售挖掘机?说明理由.
您最近一年使用:0次
10 . 函数
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f219ddb85f4385139a9c5c8bc661d93a.png)
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