This equation may be solved using the methods of trigonometric solution.
2.
Tellier s trigonometric solution of this problem is the following:
3.
In the case " c " = 2, trigonometric solutions exist for the periodic points of all periods.
4.
Fran�ois Vi�te ( 1540 1603 ) independently derived the trigonometric solution for the cubic with three real roots, and Ren?Descartes ( 1596 1650 ) extended the work of Vi�te.
5.
Just as the squared sine function in the trigonometric solution leads to neither shrinkage nor expansion of the set of points visited, in the latter solution this effect is accomplished by the unit modulus of \ alpha.
6.
He published an elegant trigonometric solution of Malfatti's problem in the French math journal " Nouvelles Annales de Math�matiques ", but due to a copy error the author's name was given as " Lechm�tz ".
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