René Descartes
The life of René Descartes - Analytical Geometry and Secret Life
Famous Equations
1. Descartes' Rule of Signs
Determines the number of positive real roots of a polynomial.
$$ v - p = 2k $$2. Polyhedral Formula
A precursor to Euler's formula for polyhedra.
$$ \sum (V - 2) = 2(F - 4) $$Sources: https://mathshistory.st-andrews.ac.uk/Biographies/Descartes/
