Posted by haifeng on 2023-03-02 09:14:33 last update 2023-03-02 10:02:07 | Answers (1) | 收藏
设 $\vec{a}, \vec{b}, \vec{c}\in\mathbb{R}^3$, 证明:
\[ \vec{a}\times(\vec{b}+\vec{c})=\vec{a}\times\vec{b}+\vec{a}\times\vec{c} \]
注: 这是向量积的分配律.
