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docs: 修改一小处笔误和增加一点点无关紧要但有助于理解的翻译内容 #3

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docs: 修改一小处笔误和增加一点点无关紧要但有助于理解的翻译内容 #3

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4 changes: 2 additions & 2 deletions 01-01 向量,矩阵.md
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Expand Up @@ -215,7 +215,7 @@ $$
> $$
> 而且 $\vec{v} \cdot \vec{w} = \vec{w} \cdot \vec{v}$, 顺序无关紧要

经济学上,假设我们有三个商品需要销售或者购买,价格分别是$(p_1,p_2,p_3)$.形成了价格向量 $\vec{p}$.购买或者销售的数量分别是$(q_1,q_2,q_3)$.那么总的收入就是:
经济学上,假设我们有三个商品需要销售或者购买,价格分别是$(p_1,p_2,p_3)$.形成了价格向量 $\vec{p}$.购买或者销售的数量分别是$(q_1,q_2,q_3)$,其中以正负区分买进和卖出.那么总的收入就是:

$$
\text{Income} = \left( q _ { 1 } , q _ { 2 } , q _ { 3 } \right) \cdot \left( p _ { 1 } , p _ { 2 } , p _ { 3 } \right) = q _ { 1 } p _ { 1 } + q _ { 2 } p _ { 2 } + q _ { 3 } p _ { 3 } = \text{dot product}
Expand Down Expand Up @@ -358,7 +358,7 @@ Fig1.9展示的是 $ \vec{ i} =(1,0), \vec{ u}=(\cos \theta,\sin\theta)$ 这两
> $$
>

如果 $ \vec{v}, \vec{ w}$ 不是单位向量
如果 $ \vec{v}, \vec{ w}$ 不是零向量

![1571382367607](.assets/1571382367607.png)

Expand Down