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# What are some inventions of Rene Descartes?

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According to Wichita State University, Rene Descartes invented the Cartesian Plane, which is a theory of using ordered pairs to determine a specific point. This theory, explained in "La Geometrie," led to the invention of analytical geometry in which algebra is applied to geometry.

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Part of the Cartesian Plane theory is the Cartesian coordinate system, a three-dimensional coordinate system. The modern Cartesian coordinate system is often simplified to a two-dimensional system with a horizontal line called the x-axis and a vertical line called the y-axis. The lines are labelled and intersect at the origin point at zero. The location of points between the x- and y-axes are determined by reading the numbers on both axes.

Rene Descartes lived during the 1600s. He started his education at the age of eight, in the Jesuit College in France. Despite frequent ill health, Descartes studied at the college for eight years before moving to Paris to study mathematics. He thought that mathematics was the portal to understanding the science of nature. At the age of 21, in 1617, he joined the army. It was during his military service that he truly started his love affair with mathematics. He left the army in 1621 to devote his time to mathematics, but it took him 17 years to publish "La Geometrie."

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## Related Questions

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French philosopher and mathematician Rene Descartes is behind many important concepts, from the Cartesian plane in mathematics to the "I think, therefore I am" philosophy. Descartes was born to humble beginnings, but he managed to become an important thinker and notable person.

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Rene Descartes, the French philosopher and mathematician who invented the Cartesian coordinate system, is considered the father of modern analytical geometry. His work was crucial to the discovery of infinitesimal calculus by Gottfried Liebniz and Isaac Newton.

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Descartes' works include "Musicae Compendium," "The World," "Man," "Dioptrics," "The Meteors," "Geometry," "Discourse on the Method," "The Meditations," "Principles of Philosophy," "The Search for Truth," "The Description of the Human Body" and "Passions of the Soul." Some were published posthumously as were some essays and letters that were lesser known.

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Although often remembered best for the quotation "I think, therefore I am," the philosopher and mathematician, Rene Descartes, also developed the Cartesian coordinate system, made significant contributions to the field of optics and devised a mechanistic model of physics. In addition to being considered the father of modern philosophy, based primarily on his breaking away from the previously adhered-to Scholastic-Aristotelian tradition, Descartes is also viewed as one of the major figures in the scientific revolution that was taking place in the 17th century. One of his most ambitious undertakings was the development of a systematic theory of deduction and knowledge based on methodological skepticism that eventually grew into 17th-century European rationalism.