我们可以用，矩阵乘法或矩阵乘积的形式来表述这些式子。
And we can reformulate this in terms of matrix multiplication or matrix product.
我们将对矩阵乘法的标准技术稍微进行一下修改，这样就可以使用前面介绍的算法了。
We'll make a slight change to the standard technique for multiplying matrices so that the previous algorithm can be applied here.
我们学过矩阵乘法的，以及用矩阵表示线性方程。
OK, so we've seen how to multiply matrices, and how to write linear systems in matrix form.
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