1 . 当实数
变化时,函数
最大值的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b78c79175b07675507fca34fd59fbd24.png)
A.2 | B.4 | C.6 | D.8 |
您最近一年使用:0次
名校
解题方法
2 . 已知全集
,集合
,则
( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860ebb6f76cd3cb9a265dfc233002a13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a87282747f3ccefec81cb5369189f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/368dd70c0435a6a2cc5ec710e31274aa.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2024高一下·江苏·专题练习
解题方法
3 . 如图,在三角形
中,M、N分别是边
、
的中点,点R在直线
上,且
(x,
),则代数式
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6c71a0da6a878a5b12bf8a8e784645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6b454e7d242eeb4d2fbd6d01993c427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a50ac027c6ebce491ae836524d89901c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/541875b090df1429fded8c1d007023f2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024高三下·全国·专题练习
解题方法
4 . 已知集合
,
.若
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c581a30d70e2894bbb93b96528996302.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51452061e672940d11737de54c806d2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea9a4259cca10c1f5af28e621ebafd6.png)
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2024高三下·全国·专题练习
5 . 已知函数
,
.
(1)若关于
的方程
只有一个实数解,实数
的取值范围为___________ ;
(2)若当
时,不等式
恒成立,求实数
的取值范围为_________ ;
(3)函数
在区间
上的最大值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f496911266e86ff15d128b01657838cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38b8ee0eda4e045c51b2fb6518dc7457.png)
(1)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e48d083295a18dbf2ba261145bd37fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43920f5171ed31db2520ef00e4c5fc24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fe958fdf039b2e2c47d685b7b5bb0ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ead3fdcb8fe8f5eb3dbe7d96cabc28b.png)
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名校
解题方法
6 . 某口罩生产企业,在疫情期间每月生产
万件N95口罩的利润函数为
(单位:万元).
(1)当
时,求企业平均每万件月利润的最大值.
(2)当月产量为多少万件时,企业的月利润最大?请为企业生产经营提一些合理建议.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91198ef667a176d0843b72fc4167f641.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/688fc294e74f86d9a7663c23efaad23a.png)
(2)当月产量为多少万件时,企业的月利润最大?请为企业生产经营提一些合理建议.
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2024高三·上海·专题练习
解题方法
7 . 设函数
在
上有定义,实数
,
满足
.若
在区间
上不存在最小值,则称
在区间
上具有性质
.
(1)若函数
,且
在区间
上具有性质
时,求常数
的取值范围;
(2)已知
,且当
时,
,判别
在区间
上是否具有性质
,并说明理由;
(3)若对于
的任意实数
和
;函数
在区间
上具有性质
,且对于任意
,当
时,有:
,证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6d804ef44bfc64f824b0ccef71765e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1accdaf7d28bf884e8a044a8960190ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/152e7be0c0054be3a8d537ef39d35da7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/152e7be0c0054be3a8d537ef39d35da7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a9635084c172726da8e140d6c9044a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/337a23f9bf790be6e03b88fb2d03f18b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/630188a3505f47c8d2098c92475cf191.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a31f7a8c150b3f4e720db0401fd5fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ffbd6d46c75b7454cc1259ed8d818ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/992d70084c8512958a36ac591e74f617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
(3)若对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1accdaf7d28bf884e8a044a8960190ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/152e7be0c0054be3a8d537ef39d35da7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8b66875df124e8b7255feaea8e0c40f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ea1ba78ae2c541ac99bd30802e0e1cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636289ad84b4a3a51095dd32ca201f94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b67cac8abe9566def881056297caf0d.png)
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2024高三·全国·专题练习
8 . 已知函数
,记
是
在区间
上的最大值.
(1)当
且
时,求
的值;
(2)若
,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9a42e8c8d8635b22dfb63050ee86d00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d09a2b7c019dae83e027830b82b3ee8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd4c63ae1fc87e1892f88e181ddadf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69f0fc9dd70eb68ef7e6da21e56dcf57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790b46a94054fee60cbc4cd9e09ed5c7.png)
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名校
解题方法
9 . 如图,球
内切于圆柱
,圆柱的高为
,
为底面圆
的一条直径,
为圆
上任意一点,则平面
截球
所得截面面积最小值为__________
若
为球面和圆柱侧面交线上的一点,则
周长的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4f5433a5ff7e6d806eb3bfb34bd3a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1726b15a51333bfaafb4f6f4a4e23cd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ad09714898da4802e86c6595f7c6dc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e4dd6baf95be502586df9f93582ddc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e707a7bea901a3af6aef3cd43ac685e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe65856674c95e6c04ae405f68cd74a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/17/21deb060-ea17-4e91-a482-f066f8f3c0e5.png?resizew=140)
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2024-04-13更新
|
1128次组卷
|
5卷引用:专题1 立体几何中的截面问题【练】(1)
10 . 在
中,
,当
时,
的最小值为4.若
,
,其中
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f11dd0962a6f2e996b1c523783c98acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b8e5990ef4ef314941a3154457a9d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba51413244bc78a0e9a3183283c1cff6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d788a8f1a85eda30184e507bb7bd47bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc757f3a356286e95586a42556d9e747.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62285e1b939c33bfe8f4985b16273965.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14329b73af66646b981e106896efdc10.png)
A.2 | B.![]() |
C.![]() | D.![]() |
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