Valentine CORRECTED

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#989

From: LUDVIK KOWALSKI
Date: Tue, 14 Feb 1995 02:58

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For math teachers.
                   Ask students to draw a graph of the following relation:

           y=0.75*abs(x) (+/-) sqr(1-x^2)    for x between -1 and +1

   First with + then with -. It will be a heart. Probably an old story
   but it was new to me. In case you are not a programmer: abs(x) is the
   absolute value of x, x^2 is x*x and sqr() is the square root.

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From: LUDVIK KOWALSKI <KOWALSKI@APOLLO.MONTCLAIR.EDU>
Subject: Valentine CORRECTED
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