<p>若向量<img src="https://learnfile.20230611.cn/learnAppQuestion/0e/20/0e20668c711c26c927fa466cd28d6a6c.jpg" style="width: 100%;height: auto;">则<img src="https://learnfile.20230611.cn/learnAppQuestion/19/d5/19d53afa77275f3de7b54fa44c21f831.jpg" style="