<p>若向量<img src="https://learnfile.20230611.cn/learnAppQuestion/0a/d0/0ad0e116918f03ca8461bbf9f661fa84.jpg" style="width: 100%;height: auto;">则<img src="https://learnfile.20230611.cn/learnAppQuestion/80/d4/80d47e0fa8d85b074cb5bed4585fc325.jpg" style="