信不信由您，该库甚至还有矩阵相加的工具。
The library, believe it or not, even has facilities for adding matrices.
他们被要求在五分钟内完成一个简单的数学任务——在一个数字矩阵中找到相加等于10的数字对。
They were all then told they had five minutes to complete a simple mathematical task, looking for pairs of Numbers that added up to 10 in a grid of three-digit Numbers.
对于我来讲，那个矩阵乘以这个矩阵表示我取一倍的那个列和两倍的那个列然后相加。
For me that matrix multiply this matrix multiplication say that I take one of that column and two of that column and add.
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