1 . 已知函数
.则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e245b921e1d4a735522680b7d6ebf1a.png)
A.![]() ![]() |
B.![]() |
C.若![]() ![]() |
D.存在![]() ![]() ![]() ![]() |
您最近一年使用:0次
2 . 函数
的图象如图所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/779d9777-74a6-4ed9-9a4e-6f3274e93aae.png?resizew=188)
(1)求
,
,
的值;
(2)把
的图象上所有点的横坐标变为原来的
(纵坐标不变),再把得到的图象向右平移
个单位长度,得到函数
的图象,求满足
的
的取值集合.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/557bc8a55358c29f155fec962a4a8405.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/779d9777-74a6-4ed9-9a4e-6f3274e93aae.png?resizew=188)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
(2)把
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe4b6f019a70b50c4d82289346fee5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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解题方法
3 . 已知向量
,
.
(1)若
,求
;
(2)若
在
方向上的投影为
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff0812ea92afd60233426521798f5ca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b81d3efc3062e04a81700ab004c210d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfd976358b302f80d46b2db4a43b06c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cd8bbf47b69bbd7a6263b041290d11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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4 . 已知点
,
,
是函数
的图象和函数
的图象的连续三个交点,若
周长的最大值为
,则
的取值范围为________ .
![](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/58a2df4eacc58ed8629f381164f94df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e139317709c2107a25503607a4190d65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/388590e0f8d9dfeaf2b65f80648257d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
您最近一年使用:0次
2021-08-04更新
|
230次组卷
|
2卷引用:广西北海市2020-2021学年高一下学期期末数学试题
5 . 已知单位向量
满足
,则向量
在向量
方向上的投影为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ccba3b87a8a48ac3dd5f72d00bdb1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64e49702961fda9a103923034c2a1cb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f1c1dd6b13d92f2cc2eef097e14c07c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
6 . 已知锐角
满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3f02631642d290fb8757256f6c2b3d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90e888ea14da893971e13858945bf0cd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
7 . 已知平面向量
与
之间的夹角为
,
,
,则
与
之间夹角的大小为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aab965db6a75608cabd02d52afd7a816.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be678a969afd1eb7be0d9845a85fcbca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a0ef21ca52dd8e65d9e94ea2ffba4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88d0e0bbeec098211cbd491aba80b36d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e6fd8641216bb14da546371b8528296.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/799c0991d1112fb9673a747466d5b209.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-07-30更新
|
290次组卷
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3卷引用:广西河池市2020-2021学年高二下学期期末数学(理)试题
8 .
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f05d2667ee01137e1e7dbd8836891a7.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-07-30更新
|
422次组卷
|
3卷引用:广西河池市2020-2021学年高二下学期期末数学(理)试题
名校
9 . 已知
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3307f858396f5f4b95508a7be90aeb43.png)
A.![]() ![]() |
B.![]() ![]() ![]() |
C.![]() ![]() ![]() |
D.当![]() ![]() ![]() |
您最近一年使用:0次
2021-07-30更新
|
400次组卷
|
4卷引用:广西河池市2020-2021学年高二下学期期末数学(理)试题
名校
解题方法
10 . 已知
,
,
,
.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c65b6c42393fae47c51101713167ff71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb4234175c2f92792ab2d298d45df37a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a892dbcef7934d97016bb190d94e0bc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a40cb7958c821d2af477e4b26874377.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850dba25bf0f5f13541bf9b6ec12b84d.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
您最近一年使用:0次
2021-07-30更新
|
387次组卷
|
2卷引用:广西桂林市2020-2021学年高一下学期期末数学试题