名校
解题方法
1 . 已知函数
的定义域为
,值域为
, 函数
具有下列性质:(1)若
,则
;(2)若
,则
.下列结论正确的是( )
①函数
可能是奇函数;
②函数
可能是周期函数;
③存在
,使得
;
④对任意
,都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4496b6dc110a079d8164cc1fb0f933ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70e2adedc216f343e2d8df4d40829d10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4496b6dc110a079d8164cc1fb0f933ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e990af66705cbda7c03d41d5ab5fad5c.png)
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
③存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02cab1add26335b3cb43d5b54c7c853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b665a1329dcb5c9904dd1b3eb9c671c.png)
④对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02cab1add26335b3cb43d5b54c7c853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b327deb9ee8c04433c03b92b6548c575.png)
A.①③④ | B.②③④ | C.②④ | D.②③ |
您最近一年使用:0次
2021-05-05更新
|
1136次组卷
|
4卷引用:数学-2022年高考押题预测卷03(北京卷)
解题方法
2 . 某学校举办毕业联欢晚会,舞台上方设计了三处光源.如图,
是边长为6的等边三角形,边
的中点
处为固定光源,
分别为边
上的移动光源,且
始终垂直于
,三处光源把舞台照射出五彩缤纷的若干区域.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/26/b6550c17-ac14-4a09-99aa-dbac9608a71b.png?resizew=170)
(1)当
为边
的中点时,求线段
的长度;
(2)求
的面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d54431bbb28ebd98db5c1dc6083a75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce6c0e9de83f2e64ae33609fc08459d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/26/b6550c17-ac14-4a09-99aa-dbac9608a71b.png?resizew=170)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68d65ed39a9dfd09c5b907b5de6b144.png)
您最近一年使用:0次
名校
解题方法
3 . 已知函数
的定义域为D,若存在实数a,b,对任意的
,有
,且使得
均成立,则函数
的图像关于点
对称,反之亦然,我们把这样的函数
叫做“
函数.
(1)已知“
函数”的图像关于点
对称,且
时,
;求
时,函数
的解析式;
(2)已知函数
,问
是否为“
函数”?请说明理由;
(3)对于不同的“
函数”
与
,若
、
有且仅有一个对称中心,分别记为
和
,
①求证:当
时,
仍为“
函数”;
②问:当
时,
是否仍一定为“
函数”?若是,请说明理由;若不一定是,请举出具体的反例.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02cab1add26335b3cb43d5b54c7c853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d877b154b2c2f42ebc9bb4c85faef9f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5ca6a673a07fe420e017b3e24d3887.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30277e0be448b4955903e81e8795e45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4370226c16822cf9bbc390444c581bf.png)
(1)已知“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4370226c16822cf9bbc390444c581bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c7b69e93488fcd2a195cb9793e94fc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2d53e84446ab2d482dd8cdfeb27b402.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df4cf16e39bff4aa2d482c90411d5ca6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/129da6ef5f007a81bcfa5847fda1ed40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4370226c16822cf9bbc390444c581bf.png)
(3)对于不同的“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4370226c16822cf9bbc390444c581bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31d496307b8bab026701a3293ccde58a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ea5dc4754e7173e6b6eed461c0e490.png)
①求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0a4480988244a9d04ec293975db2cc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cfcc567b95a320abcb25509923cd001.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4370226c16822cf9bbc390444c581bf.png)
②问:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7d9712c3b25f3030e166e136d3a4686.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cfcc567b95a320abcb25509923cd001.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4370226c16822cf9bbc390444c581bf.png)
您最近一年使用:0次
名校
4 . 记
(
),
(
).
(1)若
的解集为
,求
和
的值;
(2)若方程
和
都没有实数根,求证:方程
和
至少有一个没有实数根;
(3)若
,对任意的
,都存在
使得关于
的不等式
有解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2755fcabc5ee31d2fc498fe2c49b03f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e0137d9ccd136186c2fe74a11e42376.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2fade3a0936bce1f314c8e264aa6d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7569cd7e9b31ad838230133b9bc8314.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e44284cb19805a584880a686ac3df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5f5e5688b5c7e514ee72597690a7676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab07e032a53680089686bbbcd27c4414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c3e204cd5978cb40f691e040438e3c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/804c9cadb1f88ae4d408c94294ba5902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9c644eb85873694490f987e9525805.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c579f7b3a3c7b6b5c70cf826ef91da37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e0137d9ccd136186c2fe74a11e42376.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2bf33032e4f44ff4e9473e069dd8be5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/142ddc55e14c91623d09684307af2d48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
名校
5 . 设函数
.
(1)当
时,若直线
是曲线
的切线,求
的值;
(2)若函数
在区间
上严格增,求
的取值范围;
(3)若
且满足
,对任意的
,恒有
,求证:对任意的
,当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e99b2155565e0832a2bc405cd29843.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9a9b769d70cb6f29e965c800921c8ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0e54c5da8061411e6659614a6511a30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca83d5dea2d5c02ac18a9c9496ca57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1313a22f7070883f17d39700f383b504.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe276c0522839b1d37086d92612aa7c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc3d1fe6dd2ff21f192e14fd85062fb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d8deeaabea77488158d0a98639e02ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2958030ec9d7543dda1f529593a915e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af041a320a49a5db1828a26c0613ec89.png)
您最近一年使用:0次
2022-12-02更新
|
527次组卷
|
2卷引用:上海市大同中学2021-2022学年高二下学期期末数学试题
6 . 定义
,A中元素称为x奇函数;
,B中元素称为y奇函数;
,C中元素称为双偶函数.例如∶
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede41d28405605d0b035108fadee0cd1.png)
(1)在下面横线上填下列词的一个∶ “真包含” “真包含于”“相等”,A∩B C,并说明理由;
(2)若所有项系数均为正数的多项式函数g(x,y),满足g(x,y)∈C,且g(x,y)=g(y,x),则可以找到关于t的多项式函数h(t),使得当x>0、y>0时,g(x,y)≥h(xy), 且等号当x= y>0时取到,求这样的h(t);
(3)证明∶对任何函数f(x,y),x∈R,y∈R,均可得到如下分解∶
,其中
为x奇函数,
为y奇函数,
为双偶函数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fea6d93cb5d605d21fe86b3a92796828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35bd194f1a72c7faeca9f2dec1f9c647.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8fe01caeda263d0069d2c5fd31085b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1fdbbc4dcf07441a069f1fa481741d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14c988035a9522f8e8e7fda10038d07e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede41d28405605d0b035108fadee0cd1.png)
(1)在下面横线上填下列词的一个∶ “真包含” “真包含于”“相等”,A∩B C,并说明理由;
(2)若所有项系数均为正数的多项式函数g(x,y),满足g(x,y)∈C,且g(x,y)=g(y,x),则可以找到关于t的多项式函数h(t),使得当x>0、y>0时,g(x,y)≥h(xy), 且等号当x= y>0时取到,求这样的h(t);
(3)证明∶对任何函数f(x,y),x∈R,y∈R,均可得到如下分解∶
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94d60bc39fc16f8695207d73101581f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07fd0c1e0ec352f8a9ce8b0f92ac95e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b72607614bd7bd527880556b91b41e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b15b2c29613f899e609962bebb393908.png)
您最近一年使用:0次
22-23高三上·江西南昌·阶段练习
解题方法
7 . 黎曼函数R(x)是一个特殊函数,由德国数学家黎曼发现并提出,该函数定义在[0,1]上,当
都是正整数,
为最简真分数)时,
;当
或1或x为(0,1)内的无理数时,
.若
为偶函数,
为奇函数,当
]时,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf51ef39626c5fbbca1cd931b4b19db9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a507c062709cfe2f218896247461c7d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35888de80226a81c4c80fecb8f4a9337.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df21bcb07cb594d6614230b2317942f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fb5e3c82f6a63eff281d22c5dce3717.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c55d54b37137bf7931c49d5ea0aa10d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa23f55b24e2c4f5d6fe25f577026a73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17f0938fdb2f573f102d3422eefb074e.png)
A.![]() ![]() |
B.![]() ![]() |
C.![]() ![]() |
D.![]() ![]() |
您最近一年使用:0次
2022-10-30更新
|
486次组卷
|
4卷引用:江西省南昌市金太阳大联考2023届高三上学期10月联考数学(文)试题
(已下线)江西省南昌市金太阳大联考2023届高三上学期10月联考数学(文)试题(已下线)江西省南昌市金太阳大联考2023届高三上学期10月联考数学(理)试题贵州省毕节市金沙县2023届高三上学期期中教学质量检测数学(理)试题江西省南昌市三校(一中、十中、铁一中)2023届高三上学期第一次联考(11月)数学(理)试题
名校
8 . 设函数
.
(1)证明函数
在
上是递减函数,在
上是递增函数;
(2)函数
,若实数
,满足
,求
的最小值;
(3)函数
如(2)中所述,
是定义在
上的函数,当
时,
,且对任意的
,都有
成立,若存在实数
满足
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad088956aa34f0f709914dc8a2d9263.png)
(1)证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1242ec96ac54e2fd418988d5190a88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a6e01f72f4ad539e048680eb2a7a9d2.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d150a76e9bac9ead375e43f0784249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e859c3fea2978dffe91deb3fef54eea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13502d46b8563c54c09b29b20b3006a4.png)
(3)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f417f76e2e7eb5231d8e90fb85c5b17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/362c09f673017d42b868689cdd1c52e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
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