这种乘除法怎样解释呢？。

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disafer
disafer 2022-11-22
评论： Walter Roberson 2024-11-29
com= (input1 * profit) / total;
其中 input1
profit和 total三个变量都是一行N列变量，为什么它们可以如此乘除，怎样解释意义呢？谢谢！
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Walter Roberson
Walter Roberson 2024-11-29
Approximate translation:
Among them, input1 profit and total are all variables with one row and N columns. Why can they be multiplied and divided in this way? How can you explain the meaning? Thank you!

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回答（1 个）

埃博拉酱
埃博拉酱 2024-11-28
一行N列变量指的是行向量吗？两个行向量是不能做矩阵乘法的，这个代码应该会出错，因此也没有什么意义可以解释。
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显示 1更早的评论
Walter Roberson
Walter Roberson 2024-11-29
Approximate translation:
Does a row and N columns of variables refer to a row vector? Two row vectors cannot be matrix multiplied, so this code should fail, and there is no meaning to explain.
Walter Roberson
Walter Roberson 2024-11-29
@John D'Errico
The remark turns out to be relevant.
The original appears to contain a row vector "*" another row vector. The remark is that that would fail.

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