倍的x，当我用一个向量乘以一个矩阵时，我得到了一个列向量的(线性)组合。
A times x, when I multiply a matrix by a vector, I get a combination of the column.
一个向量——例如，摄像机位置——乘以恰当的平移矩阵从而得到相应移动的向量。
A vector — for example, the camera position — multiplied by the correct matrix for translation results in a vector that moves accordingly.
是一个矩阵乘以一些未知的向量，等于一些已知的向量，怎么解？
X It's a matrix times some unknown vector, x, B equals some known vector, B How do we solve that?
我怎么用一个矩阵乘以一个向量呢？
只要记住：如果你要用一个方阵，乘以一个列向量，当矩阵在左，向量在右的时候乘积才有意义。
It's just something to remember: if you have a square matrix times a column vector, the product that makes sense is with the matrix on the left, and the vector on the right.
只要记住：如果你要用一个方阵，乘以一个列向量，当矩阵在左，向量在右的时候乘积才有意义。
It's just something to remember: if you have a square matrix times a column vector, the product that makes sense is with the matrix on the left, and the vector on the right.
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