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Rene Descartes lived from 1596 to 1650. He was a French mathematician, philosopher, and anatomist. He contributed to modern ideas, mainly those associated with science, rational thought, and the scientific method.He was born in La Haye, a city in central France. His father was a lawyer and left him an annual income for life. He attended the college of Henri IV at La Fleche when he was 10, ordered by his father. Descartes left La Fleche in 1614 to study civil and anon law at Poitiers and two years later he had received the baccalaureate and licentiate degrees in law. In 1918 he joined the army of Prince Maurice of Nassau as a volunteer. In his early life he wanted to accomplish something in ...view middle of the document...

" He also made the first systematic account of mind and body relationship, and soul's contact with the body. In the fields of mathematics and astronomy, he was one of the founders of coordinate geometry and a change in algebraic notation. Also, he said that external motion affects the nerve divers, and it is because of this that he is credited with the founding of the reflex theory. He claimed that the world is created by god, and that it is made up of two substances, matter and spirit.In Descartes' Treatise he first discussed specific problems in physics, including an echo, resonance and water pressure. He then considered mathematical problems such as the drawing of a tangent at an angle of 45 degrees to a curve, and set out his working of the complete equation in detail. He then considered the problem of perfect numbers, stating his belief that he will be able to demonstrate that no even numbers are perfect except those of Euclid.He also discussed the center of gravity of a sphere, work on balances and levers, a point concerning burning glass, development of spectacles for old men, condensation and rarefaction, the law of falling bodies, and his theory of matiere subtile.Descartes invented what we now call Cartesian coordinates, or the system by which we can graph mathematical functions in two-or three-dimensional space. So, all of those problems you have been working in algebra are his fault. It is interesting to consider how Descartes came to develop Cartesian coordinates. Descartes was lying on his bed watching a fly. Slowly, it came to him that he could describe the fly's position at any instant by just three numbers. Those three numbers were along the planes of the...

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