El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$- \tan{\left(x + \frac{\pi}{3} \right)} - 2 = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = - \operatorname{atan}{\left(2 \right)} - \frac{\pi}{3}$$
Solución numérica$$x_{1} = -33.5702728048886$$
$$x_{2} = 63.819099456395$$
$$x_{3} = -55.5614213800172$$
$$x_{4} = -11.5791242297601$$
$$x_{5} = -46.1366434192478$$
$$x_{6} = 85.8102480315235$$
$$x_{7} = 41.8279508812664$$
$$x_{8} = 38.6863582276766$$
$$x_{9} = -24.1454948441192$$
$$x_{10} = -52.4198287264274$$
$$x_{11} = -83.8357552623253$$
$$x_{12} = -61.8446066871968$$
$$x_{13} = -30.4286801512988$$
$$x_{14} = 60.6775068028052$$
$$x_{15} = -77.5525699551457$$
$$x_{16} = -2.15434626899069$$
$$x_{17} = 10.4120243453685$$
$$x_{18} = -74.4109773015559$$
$$x_{19} = -96.4021258766845$$
$$x_{20} = -90.1189405695049$$
$$x_{21} = 98.3766186458827$$
$$x_{22} = 82.6686553779337$$
$$x_{23} = 92.0934333387031$$
$$x_{24} = 26.1199876133175$$
$$x_{25} = -17.8623095369397$$
$$x_{26} = 13.5536169989583$$
$$x_{27} = 32.403172920497$$
$$x_{28} = 35.5447655740868$$
$$x_{29} = -58.703014033607$$
$$x_{30} = -39.8534581120682$$
$$x_{31} = 54.3943214956256$$
$$x_{32} = 79.5270627243439$$
$$x_{33} = -68.1277919943764$$
$$x_{34} = 19.8368023061379$$
$$x_{35} = 51.2527288420358$$
$$x_{36} = 76.3854700707541$$
$$x_{37} = -5.29593892258048$$
$$x_{38} = 4.1288390381889$$
$$x_{39} = 16.6952096525481$$
$$x_{40} = 48.111136188446$$
$$x_{41} = -99.5437185302743$$
$$x_{42} = 70.1022847635746$$
$$x_{43} = 57.5359141492154$$
$$x_{44} = -8.43753157617027$$