1 . 将函数
的图象向右平
个单位,再把所有的点的横坐标缩短到原来的
倍(纵坐标不变),得到函数
的图象,则函数
的图象的一条对称轴为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac36e9cf9e651338a35cc6d9520c166b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecdab625e32e38d1c72c901cece0e147.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dc6e69ad1a27916fb5c3d5901ded134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dc6e69ad1a27916fb5c3d5901ded134.png)
A.直线![]() | B.直线![]() | C.直线![]() | D.直线![]() |
您最近一年使用:0次
解题方法
2 . 在
中, 角
、
、
所对的边分别为
、
、
,且
成等差数列
(1)求角
;
(2)若
,试判断当
取最大值时
的形状,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/608c4b3739a61dccc515f3fed0cad695.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69225cfdfbc0a9a1ccfdd15c46353b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2016-12-04更新
|
295次组卷
|
2卷引用:2017届江西新余一中高三上学期开学考试数学(理)试卷
3 . 已知矩形
的边
,点
为边
上一动点,则当
最大时,线段
的长为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad01a4c32fa6c84c4b86721c3c2717b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6119c1ab7e956936b5d6939499ce5594.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
A.![]() ![]() | B.![]() ![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
4 . 将函数
的图象向左平移
个单位,再将所有点的横坐标伸长到原来的
倍,得到函数
的图象,则函数
的图象与直线
轴围成的图形面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0da1ab60663e2fc1d25d9edcd8956b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b0e65fd294d3bb8bbbfe502823bce4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dc6e69ad1a27916fb5c3d5901ded134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dc6e69ad1a27916fb5c3d5901ded134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30d188cf1225fff70d476c659cf3a714.png)
A.![]() | B.![]() | C.![]() | D.以上都不对 |
您最近一年使用:0次
2016-12-04更新
|
375次组卷
|
2卷引用:2017届江西新余一中高三上学期开学考试数学(理)试卷