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- Newsgroups: sci.math
- Path: sparky!uunet!mcsun!news.funet.fi!cc.tut.fi!jk87377
- From: jk87377@cc.tut.fi (Juhana Kouhia)
- Subject: Re: Apology about f'(g(x))
- Message-ID: <1992Nov7.210901.7201@cc.tut.fi>
- Organization: Tampere University of Technology
- References: <1992Nov2.035511.826@massey.ac.nz> <1992Nov2.115020.11332@linus.mitre.org> <1992Nov2.161555.13669@CSD-NewsHost.Stanford.EDU>
- Date: Sat, 7 Nov 92 21:09:01 GMT
- Lines: 20
-
-
- In article <1992Nov2.161555.13669@CSD-NewsHost.Stanford.EDU>
- pratt@Sunburn.Stanford.EDU (Vaughan R. Pratt) writes:
- >
- >In article <1992Nov2.115020.11332@linus.mitre.org> bs@gauss.mitre.org
- >(Robert D. Silverman) writes:
- >>
- >>Look guys. f(g(x)) is a function of x, say h(x). Now, f'(g(x)) means
- >>the derivative of this function with respect to x. That is to say
- >>f'(g(x)) = h'(x)
- >
- >You: f'(g(x)) = (f o g)'(x).
- >Everyone else: f'(g(x)) = (f' o g)(x)
-
-
- I didn't see that following format was written in article here yet:
-
- Silverman should write (f(g(x)))' instead of f'(g(x)).
- (f(g(x)))' is, of course, the allready mentioned (f o g)'(x).
-
- Juhana Kouhia
-