Seja F : x -> 7sin(2x) - sin(x) - 5cos(x)

            Calculo de raiz de equacao pelo metodo da bissecao

iter    a         Fa        b         Fb        x          Fx        Delta_x
  0   0.00000  -5.00000   1.00000   2.82200   0.50000    1.0230e+00  0.50000

  1   0.00000  -5.00000   0.50000   1.02300   0.25000   -1.7360e+00  0.25000

  2   0.50000   1.02300   0.25000  -1.73600   0.37500   -2.4700e-01  0.12500

  3   0.50000   1.02300   0.37500  -0.24700   0.43800    4.2500e-01  0.06300
