1 . 如图,四边形
是平行四边形,
,
,
,动直线
由
轴起向右平移,分别交
两边于不同两点
、
.
和点
的坐标,写出用
表示
的面积
的函数解析式
;
(2)当
为何值时,
有最大值?并求出此时的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ab158dd9e96abcae0f115f54fa66c5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23aec8c7c837d9734958bde5fea94a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9488d4fb791e9274b2867a97319b50b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c00e0ca93b81029af5c4cd3bbd0314ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f7b16d65f1b2b8bea8cf4a83fde925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72d58b0fe0c727559b221753e676f14f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b096e36a68bb4f953f4f2d507af022.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b096e36a68bb4f953f4f2d507af022.png)
您最近一年使用:0次
2 . 给定正实数
,对任意的正整数
,
,其中
表示不超过实数
的最大整数.
1.若
,求
的取值范围;
2.求证:(i)
;
(ii)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba72a9bd4cffb5dbea68f3cc05c95c53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
1.若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/062c6026df79d335604d21223ba13c50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
2.求证:(i)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c69a414069ff1d5fc16594f7231aba4e.png)
(ii)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22789db88931d4f2a22b67b9794cfd7f.png)
您最近一年使用:0次