Descartes's Method of Evaluating the Principal Cube Root
Descartes's Method of Evaluating the Principal Cube Root
Descartes used the parabola with the equation and the circle with center passing through to construct the real or principal cube root . Every real number greater than zero has one real cube root and a pair of complex conjugate cube roots.
y=
2
x
(k/2,1/2)
(0,0)
3
k