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- Newsgroups: sci.math
- Path: sparky!uunet!gatech!rpi!news.columbia.edu!cunixa.cc.columbia.edu!sla7
- From: sla7@cunixa.cc.columbia.edu (Seth Louber Antiles)
- Subject: 2 questions (GRE Subject test)
- Message-ID: <1992Dec25.040617.26522@news.columbia.edu>
- Sender: usenet@news.columbia.edu (The Network News)
- Nntp-Posting-Host: cunixa.cc.columbia.edu
- Organization: Columbia University
- Date: Fri, 25 Dec 1992 04:06:17 GMT
- Lines: 16
-
- Saw this question in a sample GRE math subject test:
-
- If f(1+x)=f(x) for all real x. If f is a polynomial and f(5)=11 then
- what is f(15/2)?
-
- In general, for f a polynomial, for what g will f(g(x))=f(x) for all x
- *not* imply that f is a constant? Appreciate simple examples.
-
- What if we remove the restriction that f is a polynomial?
-
- Another GRE question in the same sample:
-
- "No element (other than identity) is its own inverse." What does this
- tell you about a group?
-
- Thanks.
-