1 . 已知函数
,若
,则当
取得最小值时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1817297374e431a1d9087dcc2991d3a9.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8e863ea4f1e8af63d06ad88a235a48f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9f81c0a84cd2c60891b1d71de2dbdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a45437e5332f864582b88474569adf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1817297374e431a1d9087dcc2991d3a9.png)
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解题方法
2 . 已知正项数列
的前
项和为
,且
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0b066416d8d61e8666b3b9d5d24a789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01cc5a3d0a69fdf4297ce92c048a5de0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d7023d3a92d97b12ca99cc05f105115.png)
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3 . 在平面直角坐标系
中,
,
分别是双曲线
:
的左,右焦点,设点
是
的右支上一点,则
的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dad0c75ce33673ec4c425896e8619e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c465763b60ec542adce65c94b0e31cf.png)
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7日内更新
|
241次组卷
|
3卷引用:江苏省南通市如皋中学2024届高三下学期高考适应性考试(三)(3.5模)数学试题
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4 . 在圆台
中,圆
的半径是2,母线
,圆
是
的外接圆,
,
,则三棱锥体积最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e65ac334119ccd6204402a7aba29a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2899e607479d8d1c47d954ae9ebb7144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d81d732204a3c2384a27606f858677.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b40d0d2f3cdd8981bb792ad87efb42.png)
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5 . 若直线
与
交于
,
两点,则
面积的最大值为_________ ,写出满足“
面积最大”的
的一个值________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/816d1f63b737faba12ab856d7e5dc885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8159f28f6c287fb3479678d6e1424217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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6 . 设
,则
的最大值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a521891098b625f372ff648d110afe1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d61b2953ddf211685e32116d834a9f9.png)
您最近一年使用:0次
7日内更新
|
696次组卷
|
4卷引用:河北省秦皇岛市青龙满族自治县第一中学2024届高三下学期5月模拟考试数学试题
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7 . 若实数
,
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfd989ddfbed4a6aa18ea57734522153.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99137cb98f861f53439fb56196610f6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfd989ddfbed4a6aa18ea57734522153.png)
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8 . 设实数x、y、z、t满足不等式
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4129c6e34eaf3f67241506fa47b6170e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae1860698d3eec1e39f246d1607ac540.png)
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9 . 设双曲线C:
的左焦点和右焦点分别是
,
,点P是C右支上的一点,则
的最小值为______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/543f9612cd8051b1f145608f08474038.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1024deca733cc89c9ced333673c14668.png)
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10 . 设
,记
为
三个数中最大的数,则
的最小值_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b67784e0c5b774a658b3c12fe05800df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc086be29684f07f3777e7d8fc62e038.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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