1 . 在数列的极限一节,课本中给出了计算由抛物线
、
轴以及直线
所围成的曲边区域面积
的一种方法:把区间
平均分成
份,在每一个小区间上作一个小矩形,使得每个矩形的左上端点都在抛物线
上(如图),则当
时,这些小矩形面积之和的极限就是
.已知
.利用此方法计算出的由曲线
、
轴以及直线
所围成的曲边区域的面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/3e3b6cc0-af8a-4a20-8adf-f85724b50c7d.png?resizew=109)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/644ede054b3087f93bd2c65683731984.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344ccbf79da6ad7e3709d6fa72efb756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd0eee3171fa7223e87af0fa95abfd10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6921dc242c40a1d342e3b033fc3aa9c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aef469c7b7cb9945b984222381b9c000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/3e3b6cc0-af8a-4a20-8adf-f85724b50c7d.png?resizew=109)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
A.![]() | B.![]() | C.![]() | D.![]() |