2024高三·全国·专题练习
1 . 设二次函数f(x)=3ax2+2bx+c.若a+b+c=0,f(1)f(0)>0.
(1)求证:方程f(x)=0有实根;
(2)设x1,x2是方程f(x)=0的两个实数根,求|x1-x2|的取值范围.
(1)求证:方程f(x)=0有实根;
(2)设x1,x2是方程f(x)=0的两个实数根,求|x1-x2|的取值范围.
您最近一年使用:0次
解题方法
2 . 函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/900fc29aaf77c14c9aafce1e06f3dcb5.png)
(1)已知
在
上存在零点,求实数a的取值范围;
(2)若
在定义域上是单调函数,
满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/900fc29aaf77c14c9aafce1e06f3dcb5.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe86cace140f2c3588ab115837bbfc9e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b112913b0d7167763e4e4195ca82f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f78ae07b1452e4f9dd8ba93db61d17.png)
您最近一年使用:0次
名校
3 . 已知函数,
(1)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/151112fcc00cde6b56dccb8f929c0177.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c00755d4400126d981ea221806996b7f.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a53a56f3f0b8514891b2a28deefbf824.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30e7fd1622316cd0f50b193a3c573e75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-12-14更新
|
801次组卷
|
4卷引用:专题2.3 幂函数与指、对数函数【九大题型】
(已下线)专题2.3 幂函数与指、对数函数【九大题型】辽宁省大连市2022-2023学年高一上学期期末数学模拟试题(已下线)高一上学期期末考试解答题压轴题50题专练-举一反三系列辽宁省葫芦岛市绥中县第一高级中学2023-2024学年高一下学期期初考试数学试题
4 . 设函数
,
,
且方程
有实数根,
(1)证明:
,且
;
(2)若m是方程
的一个实数根,判断
的符号,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4a281395f6bb6434df8575f287557c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/633357d0d9101b819d6b957423ac8b3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/196be101149acfb6a6c4ceca7fc96828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcaf7e530faed282227b6bfd0e9ea068.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17501b1b8b87e57c48465d25e767a0ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90e8d5d7fed033f48270b1ff825fcd5.png)
(2)若m是方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcaf7e530faed282227b6bfd0e9ea068.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3096936439b16630e55991e16924c04e.png)
您最近一年使用:0次
解题方法
5 . 已知二次函数
(
且
),其对称轴为
,函数
.
(1)当
时,求不等式
的解集;
(2)当
时,求函数
在区间
上的最小值和最大值;
(3)若函数
有两个零点
,
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b2b4532b787fc38f6d9921982a9df85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11abb76da45ffa52b47c3a6b9a03ac7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68072473a5106f93e3026d992859f7a1.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd5e026a565c24617edc36f82fd85e63.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0530e48690edc3429da2d23c25151296.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e0a8793c98cb6ae2d32e401874833a1.png)
您最近一年使用:0次
2023高三·全国·专题练习
解题方法
6 . 对于函数
,若存在
,使得
成立,则称
为
的不动点.已知二次函数
,满足
,且
有两个不动点
,记函数
的对称轴为
,求证:如果
,那么
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f07ad90ca228230b03f12eb48ee0c1d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73bc955d158efde0bdd62d14a60a65e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8ee0bd8a541d6c1057325f7f4287a64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f54ab7aa1626be6d6f53e26148e1e27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11abb76da45ffa52b47c3a6b9a03ac7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8145f597cf3de8a6581953dab5f1d558.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e7891769c0298d101a282eb8f6bc81c.png)
您最近一年使用:0次
名校
7 . 设函数
的定义域为
,若函数
满足条件:存在
,使
在
上的值域为
(其中
,则称
为区间
上的“
倍缩函数”.
(1)证明:函数
为区间
上的“
倍缩函数”;
(2)若存在
,使函数
为
上的“
倍缩函数”,求实数
的取值范围;
(3)给定常数
,以及关于
的函数
,是否存在实数
,使
为区间
上的“1倍缩函数”.若存在,请求出
的值;若不存在,请说明理由.
![](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/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0195f699765021e2c6ea985e487971.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad8af7bed124f00c8e19b52d028b4d90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59998fe56eb9c36024a51630145d81d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3daad3a31a3597f75fa109736ed2ebf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/497199a00f177af4c593e0e715be97f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71be95ea48f74bc5aea0e57ddec8fd54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a635f125bd16c1bea7009f4e5e402b46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)给定常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72a6e51f16456ca04a55f19fc5dcc368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa38149578f22f9e1e2bd481dade72de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
您最近一年使用:0次
名校
解题方法
8 . 如果函数
在其定义域内存在实数
,使得
成立,那么称
是函数
的“阶梯点”.
(1)试判断函数
是否有“阶梯点”,并说明理由;
(2)证明:函数
有唯一“阶梯点”;
(3)设函数
在区间
内有“阶梯点”,求实数
的取值范围.
![](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/ee7a70fbe548b4dccaf010ecf253e5cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)试判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6f9b6663be9cea0fa7fc57a7db83c7.png)
(2)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2226a022584cce85e69c8c410fab4dd2.png)
(3)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15f568a166e3c73d3c18a548c63e6d5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae4a2b3998705e51dbade9ada0873b2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-01-13更新
|
247次组卷
|
2卷引用:广西壮族自治区钦州市第四中学2023届高三上学期11月考试数学(文)试题
2022高三·全国·专题练习
解题方法
9 . 已知函数
.
(1)
(1)
成立,求
的取值范围;
(2)若
在区间
上有两个零点,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c92294103b1317ca530f5eb075f668d7.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23a6ce9eed9d3d6a6967572baa68d3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022d5937428ab378be468ceca636220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e6b685cee0668f1f2400324a81ee62.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fef9380b394a4bd829c83a5a5b4c859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3f5c08e8b47798c6454665ef6d5aa39.png)
您最近一年使用:0次
10 . 设函数
,定义集合
,集合
.
(1)若
,写出相应的集合
和
;
(2)若集合
,求出所有满足条件的
;
(3)若集合
只含有一个元素,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce5b409bb706df9ca1ccb27f893e2b6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0f90056bdaa86e0b862bde3dce36b53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60a0c740c333f153ae2e9cdef157686b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8897aa03f96629b56ab1cc6c2398bb30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b5886cf72ed5a1073263eb9ff485c7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b864bba6e36f6577c74799bb1c63303.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e76fcf1fb1bae5bfeb45951da12efb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd5371a6f0f82c65dd22f75f8b807c1.png)
(3)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b864bba6e36f6577c74799bb1c63303.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a0bf834a9b75cdc4f9e868cd76e78e.png)
您最近一年使用:0次