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#### Farmtalk

##### Active member

- Dec 25, 2012

- 42

Mine would be the Frenchmen, Rene' Descartes. I like him because not only was he mathematical but also very philosophical.

In math, you may have messed with Descartes' discoveries if you have ever messed with:

- Descartes rule of signs (Roots of polynomials)
- The Cartesian Coordinate System
- The tangent line problem