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`@@ -162,15 +162,15 @@ Matrix 是一个矩阵,最根本的作用就是坐标转换,下面我们就`
`162`	`162`
`163`	`163`	`前乘相当于矩阵的右乘:`
`164`	`164`
`165`		`-![](http://latex.codecogs.com/png.latex?$$ M' = M \\cdot S $$)`
	`165`	`+![](https://ww1.sinaimg.cn/large/006tKfTcgy1fhe1ul01s9j302m00gq2u.jpg)`
`166`	`166`
`167`	`167`	`> 这表示一个矩阵与一个特殊矩阵前乘后构造出结果矩阵。`
`168`	`168`
`169`	`169`	`### 后乘(post)`
`170`	`170`
`171`	`171`	`前乘相当于矩阵的左乘:`
`172`	`172`
`173`		`-![](http://latex.codecogs.com/png.latex?$$ M' = S \\cdot M $$)`
	`173`	`+![](https://ww3.sinaimg.cn/large/006tKfTcgy1fhe1vta7ooj302s00pq2u.jpg)`
`174`	`174`
`175`	`175`	`> 这表示一个矩阵与一个特殊矩阵后乘后构造出结果矩阵。`
`176`	`176`

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