名校
解题方法
1 . 已知函数
.若函数
对一切
均成立,则实数
的取值范围______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f207d545352a63e27d8b4dd729f04f66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2a8a9f4f0d6590de86becb733bd1b6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb005769d5478c56fc5a01d824167d8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2 .
,记
为不大于x的最大整数,
,若
,则关于x的不等式
的解集为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96b743603ab1c10330622f16db78dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f2754b3b1dad0794ec35a1771e1453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50af11c345056215054f7cfe679939da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f99d9c1529498d285e3457470c3eac.png)
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2023-12-29更新
|
322次组卷
|
2卷引用:江西省宜春市宜春中学2023-2024学年高一上学期期末数学试题
名校
解题方法
3 . 设
为
的重心,若
,求
的值为______ ;
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2372c8c6322f36a6444e6f3485c27f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e373180022c31e6f3b0b35a00c316bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b0b4385da693c68505fe76c9c60520.png)
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4 . 在处理多元不等式的最值时,我们常用构造切线的方法来求解.例如:曲线
在
处的切线方程为
,且
,若已知
,则
,当
时等号成立,所以
的最小值为3.已知函数
,若数列
满足
,且
,则数列
的前10项和的最大值为________ ;若数列
满足
,且
,则数列
的前100项和的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c72a671c1fba30deaf0f1bbbd4f34df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7152aea5d046953a8c931571be7c529.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adb815fd4ab37e3acce07473dddc6d5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f285defc2f91858fae9472d090ef34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4dd6e208196f02dba2106dbcfb68569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8285778d6832045498a16d1ceb1da957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91540ab4e6e0ac4b7be750ad9f9c5f6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a871d59989f13df946a72de050e7ec53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03f79a1c4c9f83d94fe1ebcc3ecfc0a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/065054f4e163585d630aa42cb6323a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36562bec957b5ab3ca3b64bc3dc1c1aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/282328f6df9c9c524084dc76f8499a3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a083c38783fda991b05eaf051ee6c1df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4a4465705237c08e4e05d849cb28d0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/792ce88874b917946843d4ed3da3ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77b7ab69e9605abf49d8d42c2382bb24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed63f4ab8e272b2b0083b2086315e1b1.png)
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2022-10-20更新
|
323次组卷
|
2卷引用:广东省广州市华南师范大学附属中学2023届高三上学期第一次月考数学试题
名校
5 . 设
,若
,则
的取值范围为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ab4b75fa22deba7fcbcdcb31dd45b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271908eb10459506cbaa3e054ad39be4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0724083220fed03c97336756d5cdc58.png)
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6 . 当且仅当
(其中
)时,函数
的图像在函数
图像的下方,则
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1698eb2b7eb35ba842bd4e9089d8f863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed71b5f6cf02b7e4c52c1181669a3879.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26bfd6f4f114107a8531b97079725497.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdc9500da43d762652277fcc768e4bd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0f46282728fa51ff142a5ad59b06dc.png)
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7 . 设函数
,若对任意的实数
,总存在
使得
成立,则实数
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9db8bd789c17dedf25a510e16e51d4ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02c406375769f6139689c76eaee1093e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c222379395ca8dc4629ad62fbeddffc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
8 . 对任意
,
为正实数,式子
恒成立,则实数
的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31f40c04c28b0c08a8e1cc295447fd93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f822972b34b8fbb2705ec2f166b1a37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c6ce02259a85ea191541f4a708738f1.png)
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2021-08-13更新
|
621次组卷
|
2卷引用:浙江省温州新力量联盟2020-2021学年高二下学期期中联考数学试题
名校
解题方法
9 . 已知函数
若
,则正数a的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d34fd1d44401c98025881e90b8dc3dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00d231af170daaa104c72e2f5d7d4485.png)
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2020-05-06更新
|
368次组卷
|
3卷引用:河北省石家庄二中2019-2020学年高二下学期期中模拟数学试题
18-19高二下·江苏南通·期中
名校
解题方法
10 . 已知
为定义在
上的奇函数,当
时,
,则不等式
的解集为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b64fac396f837765e79ffb7cb78c59d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/837151b8ff326973c158f8093ad25cd6.png)
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