El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\frac{x^{3}}{x^{8} + 1} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = 0$$
Solución numérica$$x_{1} = 4535.60810611062$$
$$x_{2} = 4165.94014632728$$
$$x_{3} = 4073.52317968398$$
$$x_{4} = -2026.04280825941$$
$$x_{5} = 1116.20022326709$$
$$x_{6} = -2118.45909694791$$
$$x_{7} = -1656.37866631018$$
$$x_{8} = -4151.6276655303$$
$$x_{9} = -1379.13219402782$$
$$x_{10} = 284.554825616945$$
$$x_{11} = 1578.27519879399$$
$$x_{12} = 3149.35425144589$$
$$x_{13} = -3597.12605536413$$
$$x_{14} = -824.649585047528$$
$$x_{15} = -732.238851120151$$
$$x_{16} = -3319.87544611241$$
$$x_{17} = -2395.70838303982$$
$$x_{18} = -1009.47460746027$$
$$x_{19} = -455.02245054398$$
$$x_{20} = 376.936125089709$$
$$x_{21} = 2964.5206920955$$
$$x_{22} = -3042.62501502515$$
$$x_{23} = 838.961043530654$$
$$x_{24} = 3056.93745920769$$
$$x_{25} = 2502.43733079264$$
$$x_{26} = -1841.2105041966$$
$$x_{27} = -3412.29229821251$$
$$x_{28} = -2672.95814659865$$
$$x_{29} = -2857.79151890169$$
$$x_{30} = -3689.54295776183$$
$$x_{31} = -2303.29189277032$$
$$x_{32} = -2765.37481571999$$
$$x_{33} = 1023.78641796318$$
$$x_{34} = 3981.10622365941$$
$$x_{35} = 3334.18790294715$$
$$x_{36} = 4443.19110334609$$
$$x_{37} = 3796.27234656723$$
$$x_{38} = 3519.02163208558$$
$$x_{39} = 561.734073908872$$
$$x_{40} = -270.251900282818$$
$$x_{41} = -2580.54151519928$$
$$x_{42} = -3874.37680451638$$
$$x_{43} = 1301.02927689038$$
$$x_{44} = 2040.35515342555$$
$$x_{45} = -2488.12492572787$$
$$x_{46} = -362.628993023268$$
$$x_{47} = -2210.87546149743$$
$$x_{48} = -4059.21070084535$$
$$x_{49} = 1485.85965687917$$
$$x_{50} = -917.061623421527$$
$$x_{51} = -2950.20825294117$$
$$x_{52} = -4244.04464026923$$
$$x_{53} = 3611.43852204528$$
$$x_{54} = 0$$
$$x_{55} = 931.373284226039$$
$$x_{56} = -1286.71719360537$$
$$x_{57} = 2317.60427814485$$
$$x_{58} = 4628.025116568$$
$$x_{59} = 2225.18783513063$$
$$x_{60} = 1947.93893410576$$
$$x_{61} = 1763.10680217536$$
$$x_{62} = -1101.88829890421$$
$$x_{63} = -4613.71262767709$$
$$x_{64} = -639.829988182308$$
$$x_{65} = -3966.79374691734$$
$$x_{66} = 4350.77410876444$$
$$x_{67} = -3135.04180267225$$
$$x_{68} = 1393.44433403671$$
$$x_{69} = -547.423946394837$$
$$x_{70} = 1670.690923463$$
$$x_{71} = -1563.96297388452$$
$$x_{72} = 3703.8554272433$$
$$x_{73} = 2594.85392856533$$
$$x_{74} = -1194.30253332998$$
$$x_{75} = -1933.62660631786$$
$$x_{76} = -3504.70916842872$$
$$x_{77} = -1748.79451773489$$
$$x_{78} = 3426.60475859656$$
$$x_{79} = -4428.87861739056$$
$$x_{80} = 1208.61454630398$$
$$x_{81} = 2132.77145727526$$
$$x_{82} = -4336.4616244191$$
$$x_{83} = 1855.52281193493$$
$$x_{84} = 654.140751287648$$
$$x_{85} = -4521.29561864248$$
$$x_{86} = -1471.5474704456$$
$$x_{87} = 3241.77106666231$$
$$x_{88} = 469.331523924565$$
$$x_{89} = 2779.68724326767$$
$$x_{90} = 2872.1039525334$$
$$x_{91} = 2410.02077882718$$
$$x_{92} = -3781.95987448783$$
$$x_{93} = 746.550026760819$$
$$x_{94} = 3888.68927901036$$
$$x_{95} = 2687.27056742213$$
$$x_{96} = 4258.35712289824$$
$$x_{97} = -3227.45861368543$$