Subject: Re: h??

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Posted by 張智星 on May 02, 1997 at 07:51:58:

In Reply to: h?? posted by pollo on April 30, 1997 at 23:24:02:

> 請問一下,在page203中,h不是應該等於(b-a)/n嗎?
> 在n=20,b=10,a=-10的情況下,為何h=0.5而非1呢?
> 在書中很多地方h都等於其原來值的一半......

在203頁中,h 並不等於 (b-a)/n, 而是(b-a)/(2*n+1)。
換句話說,總共取了(2*n+1)個點。
(請看 Equation (5.4.6)即可明瞭,其累積和上下限
為 -n 至 n。)



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