Re: Maximise polynomial degree N

Thanks for taking a look at it - I've solved for the restricted cases
when x=a=b or when a or b = 1 or 0. The problem is that in the more
general case the differentials are polynomials of degree > 4 and so
have no general solution in radicals... is this correct in this case?

Secondly the effect on how n is set optimally seems to be fairly
weak... the properties on n* only hold seem to hold when everything is
close to optimal

.