El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\sin{\left(\frac{x + \pi}{3} \right)} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = - \pi$$
$$x_{2} = 2 \pi$$
Solución numérica$$x_{1} = 109.955742875643$$
$$x_{2} = -97.3893722612836$$
$$x_{3} = 91.106186954104$$
$$x_{4} = 6.28318530717959$$
$$x_{5} = 7809.99933682423$$
$$x_{6} = 15.707963267949$$
$$x_{7} = 43.9822971502571$$
$$x_{8} = -50.2654824574367$$
$$x_{9} = 128.805298797182$$
$$x_{10} = -40.8407044966673$$
$$x_{11} = -59.6902604182061$$
$$x_{12} = 72.2566310325652$$
$$x_{13} = -69.1150383789755$$
$$x_{14} = 62.8318530717959$$
$$x_{15} = 25.1327412287183$$
$$x_{16} = 100.530964914873$$
$$x_{17} = -87.9645943005142$$
$$x_{18} = 81.6814089933346$$
$$x_{19} = -15412.6535585115$$
$$x_{20} = -3.14159265358979$$
$$x_{21} = -21.9911485751286$$
$$x_{22} = -78.5398163397448$$
$$x_{23} = -12.5663706143592$$
$$x_{24} = 53.4070751110265$$
$$x_{25} = 34.5575191894877$$
$$x_{26} = -31.4159265358979$$