名校
解题方法
1 . 在函数极限的运算过程中,洛必达法则是解决未定式
型或
型极限的一种重要方法,其含义为:若函数
和
满足下列条件:
①
且
(或
,
);
②在点
的附近区域内两者都可导,且
;
③
(
可为实数,也可为
),则
.
(1)用洛必达法则求
;
(2)函数
(
,
),判断并说明
的零点个数;
(3)已知
,
,
,求
的解析式.
参考公式:
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/955689923ebe1be46168295644f4a178.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ef9c42b3bfeac3b11f6f2f7c5227967.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e7490f915131bdb436285e3fb284817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ba30ad5f21a62879bba0aee45b81507.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e530f639eaa27858ed7db451e2ed576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e4658c5369aa8a25ea8580f524e87da.png)
②在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf90c83ba8da83994264cb5b8b2f15f4.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56af5e590e8152c9a7ded6209e446ced.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0de3f06b6df7b949c5e6b406a661079f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f32baa7d29934cde8a5203388ed18c6.png)
(1)用洛必达法则求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/782ec35f212cb1448863b4b15e806814.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/161ab6e6a97905ea5bb2b3fc390ab7d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deda945164283569437cda6976fe35ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ddd2a1b30b9ad891172f7f21c5a2701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bc2b7be871fef904c94ef6360ee32bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f385eacc118fe9b5f0c23182929d6a50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
参考公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9005b464218c70a9963452693645cf2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9949db821a880972efbfb32354cd6bd.png)
您最近一年使用:0次
2024-04-24更新
|
774次组卷
|
4卷引用:河南省郑州市宇华实验学校2024届高三下学期5月月考数学试题
名校
解题方法
2 . 如图,有一半径为1的球形灯泡,要为其做一个上窄下宽的圆台形灯罩,要求灯罩对应的圆台的轴截面为球形灯泡对应的大圆的外切等腰梯形,则灯罩的表面积(不含下底面)至少为__________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/a928dc54-b6c8-4073-8880-8468ba1e585a.png?resizew=157)
您最近一年使用:0次
2022-12-08更新
|
444次组卷
|
3卷引用:河南省安阳市第一中学2023届高三上学期阶段性测试(三)理科数学试题
名校
3 . 将曲线
的图像画在坐标轴上,再把坐标轴擦去(
轴水平向右,
轴竖直向上),得到的图像最有可能为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/397deebd6538e81cfb799df6203e6f4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-10-03更新
|
494次组卷
|
2卷引用:河南省郑州外国语学校2023届高三上学期第四次调研理科数学试题
4 . 已知等边三角形
的边长为1,D、E分别是BC、AC的中点,AD、BE相交于点O.有下列命题:
①
;
②若
,则
;
③若
,则
;
④设M为
内部(含边界)任一点,则
的最大值是
.
其中所有真命题的序号为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b1c6562c3686da5c17da69e7ed9fc98.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba96713dd5a080b22a5e8c340ffa45ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f852ba97b6903cc685a979e2b7dadb44.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1161546f490306ffcdc3fb0e4c1d39d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a41fd32b28f1a7c02ff37664d4ad94dd.png)
④设M为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/944e7a56085d2b02b27508470ac654af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
其中所有真命题的序号为
您最近一年使用:0次