这种乘除法怎样解释呢？。

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！

[Walter Roberson]

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!

Answer 1

[埃博拉酱]

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。

[John D'Errico]

This is not apparently spam, as had been suggested. B ut it is also not an answer to the question. If you want someone to answer your question, then you should post it as a question.

I'll delete it tomorrow.

[Walter Roberson]

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]

@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.