已知
,
.
(1)求
;
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db20d67f7d099c8d974e2f81954e023b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79553d7bebd41b202fe1a7a2449fd768.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c1a764c0f58f69357d4cd790d3a5d4.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f59e796fc41604b064d199e91597e0f1.png)
更新时间:2022-07-08 21:02:22
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解答题-问答题
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较易
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【推荐1】已知
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(1)求
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(2)若
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您最近一年使用:0次
解答题-问答题
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较易
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解题方法
【推荐1】已知向量
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbbcce7c21695766e960d7013d8477e.png)
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(1)求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefd06c239145a2b6ae87a955aa51414.png)
(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06201e4f55b78d8b30afb257d5a1b16b.png)
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(2)求
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您最近一年使用:0次