NetNews Usenet Archive 1992 #30/NN_1992_30.iso/spool/sci/math/symbolic/3303

Internet Message Format | 1992-12-17 | 746 b

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From: [e-mail] (JEFFREY MICHAEL PARSONS)
Newsgroups: sci.math.symbolic
Subject: Help with user defined functions in Maple.
Message-ID: <[e-mail]>
Date: 17 Dec 92 06:07:55 GMT
Organization: Lehigh University
Lines: 13

I tried defining a function in Maple V r1.1 like this:

f := proc(x)  if x<0 then -1 else 1 fi;  end;

I could then type f(3) or f(-100) and get the correct result.  The problem is
that I can't integrate it, etc.  I always get:

Error, (in f) cannot evaluate boolean.

Is there a better way to be doing this kind of thing?

Thanks.
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