El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\frac{x^{6}}{e^{\frac{2 x}{3}}} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = 0$$
Solución numérica$$x_{1} = 97.8166430889087$$
$$x_{2} = 81.2637846574295$$
$$x_{3} = 103.487504238663$$
$$x_{4} = 134.352945372517$$
$$x_{5} = 124.627387229014$$
$$x_{6} = 113.0416166825$$
$$x_{7} = 88.5126312062131$$
$$x_{8} = 126.5680769814$$
$$x_{9} = 111.122244826586$$
$$x_{10} = 109.206833509121$$
$$x_{11} = 83.0549616574454$$
$$x_{12} = 116.891181490104$$
$$x_{13} = 99.7007933178608$$
$$x_{14} = 84.8611721200032$$
$$x_{15} = 114.964677902782$$
$$x_{16} = 105.389116735304$$
$$x_{17} = 92.2079536599161$$
$$x_{18} = 94.0695567741399$$
$$x_{19} = 107.295681113693$$
$$x_{20} = 128.511108323558$$
$$x_{21} = 101.591246979282$$
$$x_{22} = 118.820901988382$$
$$x_{23} = 86.6808475194187$$
$$x_{24} = 122.689186101097$$
$$x_{25} = 130.456345563829$$
$$x_{26} = 95.9393552232888$$
$$x_{27} = 90.3553435221793$$
$$x_{28} = 120.753633184978$$
$$x_{29} = 132.403663281236$$
$$x_{30} = 0$$