1 . (1)求导函数
.
(2)求定积分
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01974d041922cb667e503a94dc1acac3.png)
(2)求定积分
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7655033ea2c7bfa0c9de1f348741a292.png)
您最近一年使用:0次
2021-09-02更新
|
256次组卷
|
2卷引用:江西省上饶市横峰中学2020-2021学年高二下学期期中考试数学(理)试题
2 . 我们要计算由抛物线
、
轴以及直线
所围成的曲边区域的面积
,可用
轴上的分点0、
、
、…、
、1将区间
分成
个小区间,从第二个小区间起,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,这么矩形的高分别为
、
、…、
,矩形的底边长都是
,设所有这些矩形面积的总和为
,就有
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/58a58585-2072-4fd8-aa69-9740f5b39d6a.png?resizew=200)
(1)求
的表达式,并求出面积
;(可以利用公式
)
(2)利用上述方法,探求由函数
、
轴、
轴以及直线
和所围成的区域的面积
.(可以利用公式:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344ccbf79da6ad7e3709d6fa72efb756.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee6a2eba56d4f2d1670b0256b8d86b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c350e626893ba12c028b6c8bc4ea8d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cc7040ad5dd0ebafac0e9f23bd54812.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/6b176553f857ff6e6641d79c9e83be10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ef7d1d8923879a6fdaf839d87aafeff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adf343294853aef9035ed93efb09ec2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee6a2eba56d4f2d1670b0256b8d86b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a12c3439a5339dd2ae4c91e52466f3c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/58a58585-2072-4fd8-aa69-9740f5b39d6a.png?resizew=200)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ee4f17114ccb24847c7228ae17ba8c.png)
(2)利用上述方法,探求由函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f2eff609c6043c2a89a6dd163fe2244.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/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e28ccf6acba4afeb5983cc1bc575d13b.png)
您最近一年使用:0次
解题方法
3 . 现有一块大型的广告宣传版面,其形状如图所示的直角梯形
.某厂家因产品宣传的需要,拟出资规划出一块区域(图中阴影部分)为产品做广告,形状为直角梯形
(点
在曲线段
上,点
在线段
上).已知
,
,其中曲线段
是以
为顶点,
为对称轴的抛物线的一部分.
![](https://img.xkw.com/dksih/QBM/2017/11/17/1819423769255936/1820043381997568/STEM/f2dc24cb7af14e50bff5c16ddd6c719a.png?resizew=140)
(1)求由线段
、
以及曲线段
所围成区域的面积;
(2)求厂家广告区域
的最大面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcca25052dcb5bb21dabf0a3bfafc123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/158ae5e2fef3f849ed0a46d54b39d053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/2017/11/17/1819423769255936/1820043381997568/STEM/f2dc24cb7af14e50bff5c16ddd6c719a.png?resizew=140)
(1)求由线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
(2)求厂家广告区域
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
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