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1 total messages Started by LUDVIK KOWALSKI Tue, 14 Feb 1995 02:24

#987

Author: LUDVIK KOWALSKI
Date: Tue, 14 Feb 1995 02:24

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1015 bytes

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

           y=0.75*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.

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