解题方法
1 . 已知函数
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de4ca025b2b50fa656db54f1c750059.png)
A.![]() ![]() |
B.![]() ![]() |
C.“![]() ![]() |
D.若关于![]() ![]() ![]() |
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2 . 已知函数
有两个零点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/313a8876020169bd7f1bda1148b31ab4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 已知函数
有且仅有一个零点,则实数
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42fe84ecdcafb66c2e3a4dd702503729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
4 . 已知函数
.
(1)求函数
图象的对称轴方程;
(2)若方程
在区间
上恰有两个解,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f9524f81afefceb56e60a32c42a5b5b.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d8b002680c476b8323c4b67e8bc999e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbae0d22d931ac42b565c7990764a2c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解题方法
5 . 已知函数
和
的定义域分别为
和
,若对任意
,恰好存在
个不同的实数
,
,使得
(其中
),则称
为
的“
重覆盖函数”.
(1)判断
是否为
的“
重覆盖函数”,如果是,求出
的值;如果不是,请说明理由;
(2)若
为
的“3重覆盖函数”,求实数
的取值范围;
(3)若
为
的“2024重覆盖函数”,求正实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c296e45b84cf67a98939aa7334e7d478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3eddf991be37d25d033f78bd3511809.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73ecbf34f484b62628e762bb12f09ffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95d3de6d381d271e1098162aa98a654e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e892e3c7dde74f267608ab5b09d22eb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ccf84b235ba036b51ca8e53ae6507a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b948f98a521c5d18fc3dfa60bbbe8a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e94a2262e0c51949ee65333435048a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62797a22eb499fc7317f67b1e178b568.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41fea50313112bf7f6651b442346acf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb2687a5b4ded9fa85f5ae826ebb9e9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
您最近一年使用:0次
6 . 已知函数
,若函数
在
上恰好有两个零点.
(1)求函数
的单调递增区间;
(2)当
时,关于
的方程
有两个不同的实根,求实数
的取值范围;
(3)在
中,设内角
所对的边分别为
,其中
,
的角平分线交
于
,求线段
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d37511d34ccb3502fa539edcc6e188d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28e974171c487fed265baaa2043edd9a.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f47dd5fc03cf0d593fcf67b5d18d1c2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e3397839f4b65912c2f0cfe7f05eef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f5573b30734d65648f61c0a94c98de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b369afb0960382117d6ea94d12c603cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
您最近一年使用:0次
7 . 已知函数
(
,
)的一个最高点的坐标为
,
(1)求
的解析式;
(2)将
的图象上各点的横坐标变为原来的
(
)倍,纵坐标不变,得到
的图象,且
在区间
上至少有
个零点,求
的取值范围;
(3)在(2)的条件下,当
取得最小值时,对
,都有
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a4cef456013557a296742756f5202d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13378be06b6b01bcad1d261ff14e87cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89040554aa79926881b74fe954e4d08a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ac0a36a5e3f5d5ff830906ef34f827c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7db60e959be980c3bc48cbf4640dbb59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e5257c3efa20386fa295fa96819200.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
(3)在(2)的条件下,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4ebf09f9e94cf7aadb743800edcb66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e53006ae7d3d2c3c9da5975b256343a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
解题方法
8 . 已知函数
和
的定义域分别为
和
,若对任意
,恰好存在
个不同的实数
,使得
(其中
),则称
为
的“
重覆盖函数”.
(1)试判断
是否为
的“2重覆盖函数”?请说明理由;
(2)若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53032603fb865dbbd67a26dab0d456e6.png)
为
的“2重覆盖函数”,求实数
的取值范围:
(3)函数
表示不超过
的最大整数,如
.若
为
的“2024重覆盖函数”,求正实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c296e45b84cf67a98939aa7334e7d478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3eddf991be37d25d033f78bd3511809.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d5df7922a4e98e8e07bf418dd48a7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe44a5aed663a9b61ef7355b38c77d0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95d1a18f254577a0ce74ceb27364b98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(1)试判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdbce9c20f9084e78be6aac54b4d5574.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61baa6786dc0ba48af72d476e3d33d89.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53032603fb865dbbd67a26dab0d456e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/465a56c906fba99ade616775f37cb8f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16b1787d2a3cd75a338e043b4f9cc0ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d82bab9f2808b11904d680eae089356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d94cba8309230315c53b732226fe917.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70ad59aa8360aedf4a3513854d8624fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
9 . 如图,圆
的圆心在坐标原点,半径为
,动点
从
处开始在圆
上按逆时针方向以
的角速度作匀速圆周运动,则
秒之后,点
的纵坐标
可以表示为
.
和
的值;
(2)若函数
在
上恰有两个零点,求
的取值范围;
(3)若函数
的最小正周期为
,求
在
上的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/770697745870db8c31f5dc4b2cba0aaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615870aff609025dfa776138026b82dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb9b65c51e37f40211b876be02105701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ec7563b1842fa0c05b60ec59f41e17d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c8ca569e742d9eeee3b85f61bd8e17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dcab9f2b17568fd86e0d41dd174e609.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c8ca569e742d9eeee3b85f61bd8e17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81b0245748f47eb500fbb5671f683fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3466b71d1d9117438ed50388a57d9397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0022582de33cef3b6434918e19fa96a.png)
您最近一年使用:0次
10 . 已知
,对任意
都有
,
(1)求
的值:
(2)若当
时方程
有唯一实根,求
的范围.
(3)已知
,若对任意
都有
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a16c5dd1f0da375566c3d2963bec140.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f346e5bda1610b445b3e719a2091c0a5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
(2)若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ffd1f6bd3686a07efa4086a02b96a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f5b67393dc60ad176fb2a3c900f14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31820ba4f0b613cd8150d133c47a0ffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f06d4aa6849bbb8b543a0b361e1ebb0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79d2951323344a72bce6bb2c700e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次