Rob Brown-Bayliss <rob### [at] zoismorg> wrote:
> Yes, it did thanks.  Any enlightenment following?

  The 'sturm' keyword turns on the sturmian root solver algorithm, which is
slightly slower than the default algorithm, but gives a more accurate result.
With higher order polynomials the mathematically correct result can't be
calculated (I think that a polynomial of order 4 is the largest which has
a well-defined unique solution formula). For higher order polynomials some
approximation algorithm has to be used.
  That's about everything I know about 'sturm'.

-- 
#macro M(A,N,D,L)plane{-z,-9pigment{mandel L*9translate N color_map{[0rgb x]
[1rgb 9]}scale<D,D*3D>*1e3}rotate y*A*8}#end M(-3<1.206434.28623>70,7)M(
-1<.7438.1795>1,20)M(1<.77595.13699>30,20)M(3<.75923.07145>80,99)// - Warp -

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