1 . 已知
,
,
,
,且
.
(1)求
的值;
(2)若
,求
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6a9d3cf342b1921694fcc129f06a989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce55d0967d0dda0f49e583c2df72e691.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb27b87a8f0a768c94664131a4fdfe3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8d88054c08b24133a1bb1c86f1ceab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5aa846a5b7c96fe2ce665eb1ea5f0e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6f90c4754e6b6fc862d72943fb35569.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7383500859bbf83a8d0241104fb9538b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dc4c63a548b91061528aa11058de75.png)
您最近一年使用:0次
名校
2 . 已知
,
是关于
的方程
的两个实根,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb0115cd1e57c2758f383d0bbaec6e6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c97524d8c223c77c9deaee4bd718a95a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9352e9333e6ef83b277ecc26b1c5efe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/089e97c7691847de6a0d61dce947a395.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb0115cd1e57c2758f383d0bbaec6e6d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2018-01-19更新
|
1221次组卷
|
5卷引用:黑龙江省大庆中学2017-2018学年高一上学期期末考试数学试题
10-11高三·江苏·阶段练习
3 . 若
,且
,则
________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce632c0ad85f24096c0f05d5450e473e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6307a24eb90ab560d720e7369d21135d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b657cfa91b6394e4b00fa385a2c0149.png)
您最近一年使用:0次