Performance of various iteration formulas
tested on 66644 random equations
method	iterators	success
	exist	ratio
Inverse quadratic interp	100.00%	32.45%
Newton	100.00%	34.36%
Secant	100.00%	37.40%
W(x) iterators	4.00%	1.83%
Euler (Direct quadratic interp)	100.00%	47.14%
Halley	100.00%	48.58%
Secant (3 point)	100.00%	48.69%
Ostrowski	100.00%	51.73%
Rational polynomial iterators	21.60%	11.64%
Homotopy	100.00%	58.10%
Polynomial iterators	69.96%	44.64%
Homotopy (Euler direction)	100.00%	65.68%
Simple iterators	96.33%	69.50%
Spiral	100.00%	74.39%