解题方法
1 . 函数
的图象按以下次序变换:①每个点的横坐标变为原来的2倍;②图象向右平移
个单位长度;③每个点的纵坐标变为原来的3倍.得到
的图象,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cc53049096a1e5c4f9e1140a3786f8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b9643da0c0fea4f099f9a9133d6076.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
2022-07-06更新
|
225次组卷
|
3卷引用:河北省保定市部分学校2021-2022学年高二下学期7月质量检测数学试题
2 . 函数
的部分图像如图所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/6/8fcc2d37-bf67-4caf-9460-9705903845be.png?resizew=176)
(1)求
的解析式;
(2)将
的图像向右平移
个单位长度,再将图像上所有点的横坐标变为原来的2倍(纵坐标不变),得到函数
的图像,求
的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/703b4493b66a538140dd12bb3b268a7a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/6/8fcc2d37-bf67-4caf-9460-9705903845be.png?resizew=176)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
您最近一年使用:0次
2022-07-05更新
|
1188次组卷
|
6卷引用:河北省承德市2021-2022学年高一下学期期末数学试题
3 . 已知在
中,
为
上一点.
(1)若
且
为
的中点,求
;
(2)若
为
的平分线,当
取最大值时,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fb044eede73584df43f7db83ef9bd2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3acf551f38311eccdcc325c0d283473.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93d2de029b113f92b8e4a6ec38dd3788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2022-07-05更新
|
188次组卷
|
3卷引用:河北省保定市部分学校2021-2022学年高二下学期7月质量检测数学试题
解题方法
4 . 如图,在平面四边形
中,
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/16/83dff2b6-b712-4e7b-ad6b-31002de5f47e.png?resizew=201)
(1)若
,求
;
(2)求四边形
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ba892f2a3290920f44cb538c38044e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212bfbd5575772ca36d6fc3e7b246e49.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/16/83dff2b6-b712-4e7b-ad6b-31002de5f47e.png?resizew=201)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42b36c920017d88789d1cfc45e56e3a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)求四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2022-07-02更新
|
411次组卷
|
2卷引用:河北省定州市2021-2022学年高一下学期期末数学试题
名校
解题方法
5 . 在
中,内角
所对的边分别为
,且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a44209440d18fcb478ffab70cea2110.png)
A.![]() | B.![]() |
C.![]() | D.![]() ![]() |
您最近一年使用:0次
2022-07-02更新
|
648次组卷
|
4卷引用:河北省定州市2021-2022学年高一下学期期末数学试题
6 . 在
中,角
的对边分别为
,设向量
满足
.
(1)求
;
(2)若
,当
取最小值时,求
的周长;
(3)求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9932059dbdccc643e5f112e9d67acc48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e671d72124bb435d8ec3dd1d993d99.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a7e63c9e427324c6efe5864bb39a4ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/799a89348650d83b6917787616a256e5.png)
您最近一年使用:0次
2022-07-02更新
|
844次组卷
|
3卷引用:河北省沧州市2021-2022学年高一下学期期末数学试题
解题方法
7 . 如图,在
中,
,点
在边
上(与
不重合),延长
到
,使得
8,若
为常数
,则
的长度为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48074bb04e5d95b3b2725dc4cdf94d53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/524f25e1eedbfe399f7f42db890ab89a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316163f963033fc78a05cbae28735b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/4/c27220a9-6d27-4886-8824-51ab9edda935.png?resizew=290)
您最近一年使用:0次
名校
解题方法
8 . 在
中,内角
的对边分别为
.已知
.
(1)求
;
(2)若
的面积为
,且
为
的中点,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/106bc7fc7b1567d8600c280a105b7348.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad2de2292904b991fbd7b1ef30e7203b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
您最近一年使用:0次
2022-07-02更新
|
1293次组卷
|
6卷引用:河北省保定市2021-2022学年高一下学期期末数学试题
9 . 在
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/901805ccfb9d2af1cc95cbccec65877b.png)
(1)求角B大小
(2)(ⅰ)
,(ⅱ)
,(ⅲ)
以上三个条件任选2个,求边a,角C
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/901805ccfb9d2af1cc95cbccec65877b.png)
(1)求角B大小
(2)(ⅰ)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcdb7a488910743dc5c63afb394b87e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e49aec36cc1cf42c48acaa31f3c8fcfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f002f960ec07ea229ed243e2d991d83.png)
您最近一年使用:0次
2022-05-25更新
|
364次组卷
|
2卷引用:河北省石家庄市元氏县第四中学2021-2022学年高一下学期期末数学试题
名校
10 . 在
中,内角A,B,C的对边分别为a,b,c,且
,
.
(1)求角A的大小;
(2)若
为锐角三角形,且
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def0ca4acbb6a01003e3dd18bace0db9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad1e926fb70bdb2b9a099e5761769ad.png)
(1)求角A的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
2022-05-15更新
|
538次组卷
|
6卷引用:河北省唐山市滦南县第二高级中学2023届高三上学期期末数学试题