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解题方法
1 . 下列命题中错误 的是( )
A.![]() |
B.若![]() ![]() ![]() ![]() ![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
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2023-04-14更新
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817次组卷
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2卷引用:湖北省孝感市2022-2023学年高一下学期期中联考数学试题
2 . 两列火车从同一站台沿相反方向开去,走了相同的路程,设两列火车的位移向量分别为
和
,则下列说法中错误 的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee437e6ff470c2f67b8429f57b90ae37.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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3 . 设
是向量, 在下列命题中, 正确的是______ .
①若
, 则
; ②
③
;
④
, 则
; ⑤
; ⑥若
, 则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab7cad34fccd0fe584087604e863f352.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ed58c775bce7186af59bde3e64a820.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/898a02c66b2703daa25b7a764dc8cf52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/821d35d5fd655d4329401c130e45e1a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ec689322a47461607f04c2d9ccbd912.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7771892599cbd47acd0f2c8fd789c6b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0d45a82d95cfb0d64fd3d72320c8106.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d30e75363b3b7adccf5826f7cb39d1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73db7e39294ce82484f13c1445bea1b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d69338627d036462f9f48183b59521.png)
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