Rene Descartes
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sir isakk Newton was the first mathematician to use letters and numbers
Bar graphs and line graphs do not. Straight line, parabolic, and hyperbolic graphs are graphs of an equation.
Graphs and equations of graphs that have at least one characteristic in common.
Radicals were first used in 1525 in Die Cross. They were first used by Christoff Rudolff, who was a German mathematician.
The ancient Greek mathematician Pythagoras is usually creditted for the discovery of the ratio of circumference to radius of circles. That is, Circumference = 2 * Pi * Radius. The number Pi represents (3.1415....) is named after him.