The Calculation of the Moving of the Perihelion of Mercury in the General Relativity

A first reading of the way it calculates the precession of the perihelion of Mercury on General Relativity is taken. It is shown that the equation of motion obtained for this precession does not solve the differential equation that originated, as it is only approximate, and so we can not be sure about the fact of General Relativity to explain this precession through its solution. We also show that even in classical mechanics can obtain a False precession orbit for the planets, through the use of small quantities considered. We solve exactly the differential equation Binet to General Relativity (Schwarzschild equation) for some cases.