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Outline Sheet
for Ch 3


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chapter_3_outline_sheet.pdf
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Rene Descartes,  (1596 - 1650 )  is the inventor of co-ordinate geometry.  He had the idea to represent lines and curves by equations connecting x and y co-ordinates.  

The CARTESIAN plane is named in his honour.  

Rene Descartes was originally a soldier, fighting in several  of the wars  that raged between  feudal lords across Europe at the time.  One day, while in the middle of one of these campaigns, Descartes had a vision in which he believed that God instructed him to stop fighting and devote his life  instead to the pursuit of science and wisdom.

FAMOUS QUOTE FROM RENE DESCARTES: " I think, therefore I am. "