El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\frac{- \log{\left(x \right)} - 1}{x^{3}} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = e^{-1}$$
Solución numérica$$x_{1} = 25042.073488896$$
$$x_{2} = 51957.1867188495$$
$$x_{3} = 22948.7477293073$$
$$x_{4} = 47842.9520077417$$
$$x_{5} = 34412.2131240524$$
$$x_{6} = 27130.9065931775$$
$$x_{7} = 48872.2124221205$$
$$x_{8} = 52984.6153888935$$
$$x_{9} = 23996.003274813$$
$$x_{10} = 21900.2363398814$$
$$x_{11} = 37520.9181898502$$
$$x_{12} = 40623.6128191221$$
$$x_{13} = 32336.0615032356$$
$$x_{14} = 20850.39061241$$
$$x_{15} = 50929.3176331648$$
$$x_{16} = 45782.9502317833$$
$$x_{17} = 33374.5247048946$$
$$x_{18} = 49900.9968190764$$
$$x_{19} = 41656.6122182958$$
$$x_{20} = 35449.1566049701$$
$$x_{21} = 30256.6798866839$$
$$x_{22} = 26087.0220233627$$
$$x_{23} = 38555.7865991016$$
$$x_{24} = 43720.8787098543$$
$$x_{25} = 29215.6894966489$$
$$x_{26} = 36485.3829654246$$
$$x_{27} = 44752.1807014937$$
$$x_{28} = 28173.7797442811$$
$$x_{29} = 39590.0110002333$$
$$x_{30} = 46813.2025192634$$
$$x_{31} = 42689.0282019536$$
$$x_{32} = 31296.7914276997$$