Parabola - parabola combined method
Zoltán Szabó · Miskolc mathematical notes/Mathematical notes · 2004
A.By using the always convergent method of tangential parabolas (but not using any interval-arithmetic tool), a combined root-finding iterative algorithm is given which provides a quadratically convergent descending sequence of compact real intervals J n containing a simple zero of a twice differentiable real function defined on J 0 .