1 . 已知
,
,那么M,N,P,Q之间的大小顺序是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d27c3b25ffaf77645e44b04ba3dc2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6cc9721a2649221bd246eb06baf240d.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
2 .
满足:
都有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbc2af33d9e2ad677b2120235f799d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9962d7d23d4245e4aa5186329a62775.png)
,则
的大小顺序为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d6b13c45d8cc2f9c82ac6882a46013b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbc2af33d9e2ad677b2120235f799d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9962d7d23d4245e4aa5186329a62775.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e452d2787d833493c850090409bec5bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67f24eb470b2ebc7a9b1f84b59d38059.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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3 . 三个关于
的方程:
,
,
,已知常数
,若
分别是按上顺序对应三个方程的正根,则下列判断正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a3bbd5ce0c21f6487d53bed654941de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5feb770f58c76d5ebe8f67ea5a73a82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d1ebfe1e74a47dea957b45177a30780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2227c388ff1295daf4e49846f8d920a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad7169ce3255d2a02a20aa5932d2bd48.png)
A.![]() |
B.![]() |
C.![]() |
D.不能确定![]() |
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