Re: 工程界未進入Ax=b的原因﹖
"SI" <permittivity.@yahoo.com.tw> 撰寫於郵件新聞:4MCOYe$iP4@w42.tpe.yahoo.tw...
> 簡單的來說，國中的 generalizde function 就是Ax=b
> x=(adjA/detA)b這裏有一個古典伴隨矩陣adjA的觀念，
> 上面這個解工程書幾乎不引用。
>
> 所幸我們能從外文網站找到有關 generalized function
> The class of all regular sequences of particularly well-behaved functions
> equivalent to a given regular sequence. A distribution is sometimes also
> called a "generalized function" or "ideal function." As its name implies,
> a generalized function is a generalization of the concept of a function.
> For example, in physics, a baseball being hit by a bat encounters a force
> from the bat, as a function of time. Since the transfer of momentum from
> the bat is modeled as taking place at an instant, the force is not
> actually a function. Instead, it is a multiple of the delta function. The
> set of distributions contains functions (locally integrable) and Radon
> measures. Note that the term "distribution" is closely related to
> statistical distributions. ...e.t.c.
> ---上面可能是原因。
> --問 數學界不給工程書(Ax=b)正確答案的原因﹖
老兄，你所說的general function(或distribution) 與Ax=b的解沒啥關係！
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