已知向量
,
,
满足
,
,
与
所成的角为
,则当
时,
的取值范围是__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb573cc0f30d5c32cdad1510793f0e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d79bcb14367249745a349febe1f1df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4863393863064c8c94fd57a18c7c429.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb573cc0f30d5c32cdad1510793f0e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f1c1dd6b13d92f2cc2eef097e14c07c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c0927afc571a7c966c98192040979e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995ec593baa4ef50b6d87c78380953d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd27f0c6a7f42b918a56659a466eba1.png)
更新时间:2020-07-08 07:20:28
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相似题推荐
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【推荐1】下列说法正确的是__________ (写序号).
①若
与
共线,则点A、B、C、D共线;
②四边形
为平行四边形,则
;
③若
,则
;
④四边形
中,
,则四边形
为正方形.
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ed9c2e9fabbfc63733bae8fa079d00.png)
②四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd115ae9e1478514c6830aae3c6afb4b.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f03a8c3daf5e640bcd2a3dc094f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ec6df8a1e8ccc7a0dc182efa0a53cdb.png)
④四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b161590c26daf542f1b82f2add7be541.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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【推荐2】如图所示,两射线
与
交于
,下列向量若以
为起点,终点落在阴影区域内(含边界)的是______________ .
![](https://img.xkw.com/dksih/QBM/2010/10/30/1569881680388096/1569881685762048/STEM/481b381876a0437c8be26a2083f157e7.png?resizew=228)
①
②
③
④
⑤
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/2010/10/30/1569881680388096/1569881685762048/STEM/481b381876a0437c8be26a2083f157e7.png?resizew=228)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aecd1478275e20deaff8db1f8e2fd818.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ead1adbd16265dea84c78d993356533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2db52abc4f6c2bfaee01f3ab996ca415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ac4dd9ebe2e835567af1fa7005da73e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba31d652c01ddb160eea023e44581743.png)
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【推荐3】下列关于空间向量的说法中,正确的有___________ .
①若向量
,
与空间任意向量都不能构成基底,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069da5c624837df29947b7b8bf722097.png)
②若非零向量
,
,
满足,
,
,则有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b580b1e474eb43d7e7e2634ece223036.png)
③
是
,
共线的充分不必要条件
④若
,
共线,则
①若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069da5c624837df29947b7b8bf722097.png)
②若非零向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb573cc0f30d5c32cdad1510793f0e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5aa846a5b7c96fe2ce665eb1ea5f0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52b6fc7e4e457a179af628d22d7b1dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b580b1e474eb43d7e7e2634ece223036.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/332e87e0065e74a15975dfcb6d33b576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ed9c2e9fabbfc63733bae8fa079d00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
您最近一年使用:0次
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解题方法
【推荐1】在面积为
的平行四边形
中,点
为直线
上的动点,则
的最小值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0908b7d58ccf1ff69ead0430ad5b573.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/5/3437e73a-c033-4e22-9bb7-efa2cb009610.png?resizew=209)
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【推荐2】如图,O为直线
外一点,若
、
、
、
、…、
中任意相邻两点的距离相等,设
,
,用
、
表示![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b64558d6d4fbfde4d288e5fdce12e6fd.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca6a162e3fa7071fde598b8849a9f2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7356ec98b600ece41f3a6b4bc26a7d59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf10550277bc5bd64977159cac82a693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074ed6fe3be8a12b05a7a993f1b7b3a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aa794e2a69d054d4562e1f5c0f752ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a92e6eba8dab638fd66831cd3a0b6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/427fa45527d0ce469bfd060bf6f991f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b64558d6d4fbfde4d288e5fdce12e6fd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/d9edf233-749f-4ae1-9751-07455a137777.png?resizew=144)
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【推荐3】在平行四边形
中,
,
,点
在
上且满足
,
,若
为
的中点,且
,则
的长为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb8fb552b9e21dbaba74d11aa747790.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c9e5e20547e52ada1878a3c0d7f6669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b540e276f4f003a9a19bd5fe95d1b3fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/565fcb3f16db67fc2b6fafe63d682a47.png)
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【推荐1】给出下列命题中
① 非零向量
满足
,则
与
的夹角为
;
②
是
的夹角为锐角的充要条件;
③若
,则
必定是直角三角形;
④
的外接圆的圆心为
,半径为1,若
,且
,则向量
在向量
方向上的投影为
.
以上命题正确的是__________ (注:把你认为正确的命题的序号都填上)
① 非零向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb43284b64858a0565048c0a988bad9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cd8bbf47b69bbd7a6263b041290d11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbc0945b4e1962e66f6f7e7f6af235d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e426daec53959dabf6621c57a221e83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1f2a0cb4ce8234cde9ea6040e6f6d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24c3dffc1f628931d84b4c7211afee31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6ba913238f9aaa01696586b618ac20c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1da92a2fc2ce861e82f7192fe4e648f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
以上命题正确的是
您最近一年使用:0次
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解题方法
【推荐2】已知非零向量
,
,
满足
且
,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a0b19e69be46452425916a0fcb49c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7b260dae199db5b8caaa81c8084b88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/410d5c48716e11387dda5395bf6c1983.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26abac73b9cb1af5c5d8e8c2dd136bbb.png)
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【推荐3】如图,
、
分别是
和
的中点,已知
,
,则向量![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8926ddd0b69d714c7310cc5bf23d199d.png)
________ .(用
表示向量
).
![](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/271e24465466f48ab87451ee917263ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77227d4d2b4a96829fd5ae1dd7cad688.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/420ad6159fc091d6a5ffddf0676d2662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c2e7e9fd8519fd1c293cc577408263.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8926ddd0b69d714c7310cc5bf23d199d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a014dff8997c661055229de29c61cfc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/889119ab-c230-4922-a687-9f3a4af56ea1.png?resizew=186)
您最近一年使用:0次