El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\tan^{3}{\left(x \right)} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = 0$$
Solución numérica$$x_{1} = -97.3894646284313$$
$$x_{2} = -37.699125015227$$
$$x_{3} = 28.2743275301013$$
$$x_{4} = 21.9911516425495$$
$$x_{5} = 81.6815030255516$$
$$x_{6} = 15.7080494245905$$
$$x_{7} = -15.707974182009$$
$$x_{8} = 65.9734548322688$$
$$x_{9} = 59.6903518006018$$
$$x_{10} = 56.5485924785507$$
$$x_{11} = -43.9823032378883$$
$$x_{12} = 6.28317666652034$$
$$x_{13} = 34.5574415348642$$
$$x_{14} = 12.5662905691987$$
$$x_{15} = 87.9646063544391$$
$$x_{16} = -6.28310172957703$$
$$x_{17} = 72.2566292956156$$
$$x_{18} = -50.2654039781219$$
$$x_{19} = -28.2742528632815$$
$$x_{20} = 78.5397434013719$$
$$x_{21} = -21.9911516412507$$
$$x_{22} = 0$$
$$x_{23} = -31.4160114325626$$
$$x_{24} = 50.2654784074239$$
$$x_{25} = 37.6992006007972$$
$$x_{26} = -87.9646060160353$$
$$x_{27} = -72.2565550757263$$
$$x_{28} = 43.9823032587663$$
$$x_{29} = 100.530894304436$$
$$x_{30} = -9.42486041956663$$
$$x_{31} = -59.6902758335749$$
$$x_{32} = 94.2477801894873$$
$$x_{33} = -65.9734547258841$$
$$x_{34} = -81.6814266379545$$
$$x_{35} = -94.2477061577588$$
$$x_{36} = -75.3983135358304$$
$$x_{37} = -53.4071624709317$$