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Matrix product is associative.
矩阵乘法是有结合律的。
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So, what does it mean to do a matrix product?
那么，矩阵乘法是什么意思？
The entries in the matrix product are obtained by taking dot products.
矩阵乘积里的元素是通过点乘得到的。
If you went to the (now defunct) mtxtablet.com site that was most often used to pitch the Matrix One, you saw a strictly buyer-focused page with one product and two variants.
ENGADGET: Ginsu knives, psychic hotlines and a $90 tablet: the story behind the Matrix One (update: more details)
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