2  ! iflag = 1 - exact Newton; 2 - approximate Newton; 3 - Picard (successive substitution)
 0.1  ! alfa = parameter for Functional iteration and Picard methods (0<alfa<1)
 100  3  1.d-6  1.d-6  	1.d-5  ! maxit = Nr max iteracoes; neq = Nr equacoes; tol1 = 1a tol; tol2 = 2a tol; epsilon = delta para derivada numerica
2.d0  2.d0 -2.d0 ! u(i) = valores iniciais para o vetor de incognitas