2023高一·全国·专题练习
1 . 已知函数
的图象与x轴的交点至少有一个在原点右侧.
(1)求实数m的取值范围:
(2)令
,求
的值:(其中
表示不超过t的最大整数,例如:
,
).
(3)对(2)中的t,求函数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8b2f731d1c616a53042e3fa76fc8c9e.png)
(1)求实数m的取值范围:
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce8f5b2a73b0754432a8a71902665eb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1009921fd9a0ac0ae0a1f7a5db4886c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7054b4cdb50f283d6db90ab1a7ad877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ae4ee70c548e841fd7ceeac3250b5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64915946b3733c064fe445da00b62882.png)
(3)对(2)中的t,求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91570206b511ceee5d45f83d1cbf9ce3.png)
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解题方法
2 . 命题
关于
的方程
有两个相异负根;命题
,
.
(1)若命题
为假命题,求实数
的取值范围;
(2)若命题
与命题
至少有一个命题为真命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/437bceb596deddba816acf6e44e2d2ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5378d28d60077d1cfaf5a5ba45a11da1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a3559cbd101e39ff8cdcb3455f6abe9.png)
(1)若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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3 . 已知二次函数
.
(1)当
时,若函数
的最大值为
,求
的值;
(2)若
的两实数根均在
内,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4edf2469d6771c736dac9b852186ef8e.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a94d679c5a3906f04fe473e622331f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac2a2dbdec1e7130ee3726004108b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907e4ba6d5f2eea68442def1911957fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed18bd80c6c4142f68e89f4ad44570b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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4 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b35718e87245f93a1a4f3826db44968.png)
(1)若函数
图像与
轴的两个交点的横坐标都在
内,求实数
的取值范围;
(2)若关于
的一元二次方程
在
内有唯一解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b35718e87245f93a1a4f3826db44968.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b92b70365c63607daecdc8deb73ecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2023-11-03更新
|
551次组卷
|
3卷引用:湖南省衡阳市祁东县育贤中学2023-2024学年高一上学期期中数学试题
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5 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d884572b0c36e6d95943c38232426947.png)
(1)若
,求函数
的值域.
(2)当
时,求不等式
解集;
(3)若存在
,使关于
的方程
有四个不同的实根,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d884572b0c36e6d95943c38232426947.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a575b28f019d3a8c15713fe8276c5e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(3)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f655a2598fcf4979279745cf4799441.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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6 . 已知
,一次函数
的图象是线段
,二次函数
的图象是开口向下的抛物线.
(1)①若抛物线与线段
相切,求实数m的值;
②若抛物线与线段
只有一个交点,求实数m的取值范围;
(2)求证:抛物线与线段
恰有两个不同交点的充要条件是
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feeab04dc65757f3f7a480df503cf4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2b74eb226474d2253bf4cab617b1162.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac7eb0a8085326caeeda415aa2c98723.png)
(1)①若抛物线与线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
②若抛物线与线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)求证:抛物线与线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa30fb9013cce23517a5e99cd67fcc70.png)
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7 . 已知关于x的方程
.
(1)若方程有两个正根,求实数m的取值范围.
(2)若方程有实数根,并且一个根大于1,一个根小于1,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba29d48bfd7f71c74da6548057bd8b5d.png)
(1)若方程有两个正根,求实数m的取值范围.
(2)若方程有实数根,并且一个根大于1,一个根小于1,求实数m的取值范围.
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8 . 已知二次函数
的图象经过点
.
(1)当
时,
;当
时,
,求当
时,
的取值范围;
(2)若
,关于
的方程
有两个不相等的实根,且均大于
小于0,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54eff1aaacb1ba98b5e379789f6d47a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2e718dbdaaca77a02cb7e4467bed8c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83a9d72d676658cc5a154b58e0b6bce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13fa32c1e926f40a0722d106563777ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
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解题方法
9 . 已知命题“
”为假命题,且命题“函数
的零点一个大于
,一个小于
”为真命题.满足上面要求的实数a的取值范围为集合M.
(1)求M;
(2)设
若
的充分不必要条件是
,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33cd325e3dca3963136062694e7029a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c5c3d8c3ec7fd13f16a3cc7692a169.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
(1)求M;
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7adee3c660e3ae9b22736537af2a0fe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ca06304795e9c2c1fd0b4a52eb8d5b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acfc595518cf752e1c7903dfff93dbda.png)
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10 . 已知函数
,
.
(1)若
时,对任意的实数
都成立,求实数a的取值范围;
(2)当
时,求不等式
的解集;
(3)若存在
使关于x的方程
有四个不同的实根,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/427a7d014610e63c8050017c17b34862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85e96164a016afe3f8a0ef2239d37626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc65d6eb9b63f96d80b54ec9893aee8d.png)
(3)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f655a2598fcf4979279745cf4799441.png)
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