El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\tan{\left(3 x^{6} \right)} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = 0$$
Solución numérica$$x_{1} = -42.0116072871011$$
$$x_{2} = 86.2514262088553$$
$$x_{3} = 12.3263540274388$$
$$x_{4} = 3.78571785972469$$
$$x_{5} = -20.9097512561441$$
$$x_{6} = -91.7279689487389$$
$$x_{7} = 18.2021776445033$$
$$x_{8} = -7.75567630253329$$
$$x_{9} = -31.9733162343621$$
$$x_{10} = 14.3127537091005$$
$$x_{11} = -25.7507372825298$$
$$x_{12} = -65.7715008435944$$
$$x_{13} = -30.5345477035221$$
$$x_{14} = 54.4173312604364$$
$$x_{15} = 2.14878391941877$$
$$x_{16} = 88.2414020921257$$
$$x_{17} = 32.1914479563734$$
$$x_{18} = -11.757763301807$$
$$x_{19} = -96.0071158969591$$
$$x_{20} = 21.6764644753342$$
$$x_{21} = 98.0104769458233$$
$$x_{22} = -2.94657911220171$$
$$x_{23} = 34.2510018198919$$
$$x_{24} = -99.751539665492$$
$$x_{25} = -3.19143960848234$$
$$x_{26} = -21.6938765841706$$
$$x_{27} = -13.802691083162$$
$$x_{28} = 70.0099468796246$$
$$x_{29} = 0$$
$$x_{30} = 36.1313929767679$$
$$x_{31} = 39.9877980950919$$
$$x_{32} = 30.2730863879004$$
$$x_{33} = 26.2509020426327$$
$$x_{34} = -61.6466121056793$$
$$x_{35} = -23.7500219881748$$
$$x_{36} = 100.171184659868$$
$$x_{37} = -45.9126258528533$$
$$x_{38} = 6.6656894851923$$
$$x_{39} = 20.2082844449877$$
$$x_{40} = 43.9467738250908$$
$$x_{41} = -33.7490931388933$$
$$x_{42} = 8.18526960313128$$
$$x_{43} = -13.0629529543018$$
$$x_{44} = -6.13356273423163$$