名校
解题方法
1 . 在
中,角A,B,C的对边分别为a,b,c,若
,
,点P是
的重心,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ac616efef9fe236565d74000061ab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cab772241b7ed814073818bee03719f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
您最近一年使用:0次
2020-04-27更新
|
2391次组卷
|
6卷引用:湖北省黄冈市2019-2020学年高三上学期第一次阶段性检测数学(文)试题
2 . 已知函数
(
为常数,
)的图象的一个最高点是
,如果将函数
图象上每个点的纵坐标不变,横坐标扩大到原来的
倍,然后再向左平移
个单位长度,就得到
的图象.点
是
的图象上在
轴左侧的最高点中离
轴最近的最高点,点
是
的图象上在
轴右侧的最低点中离
轴最近的最低点,设
(
为坐标原点),则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f00b9191adefa4dee98b179e0a06cfe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a68dbd91d6de68b550a5745ecd461d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98398fb14f852292292e448bbdef8ef1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38d58425c6ac3a77d27e44dd6c47ee2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80863901d65e6149e741129307540a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2dec1f965fdf8491ead21acfc193de0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
3 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b952e7fe151802b1d89bee293fb2e3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e03a44443eb4c3136cb52867d8faaaaf.png)
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85a76b16134879cc2b436ad12e9809d1.png)
______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b952e7fe151802b1d89bee293fb2e3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e03a44443eb4c3136cb52867d8faaaaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e5031c078cc32fd54cdc037c815425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85a76b16134879cc2b436ad12e9809d1.png)
您最近一年使用:0次