x sin (E) - atan(2*x)
sin(E)^x - atan(2*x)
2 x - -------- + sin (E)*log(sin(E)) 2 1 + 4*x
2 x 16*x log (sin(E))*sin (E) + ----------- 2 / 2\ \1 + 4*x /
2 16 3 x 256*x ----------- + log (sin(E))*sin (E) - ----------- 2 3 / 2\ / 2\ \1 + 4*x / \1 + 4*x /