El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\sin^{6}{\left(4 x^{3} - 2 \right)} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = \frac{2^{\frac{2}{3}}}{2}$$
$$x_{2} = \frac{\sqrt[3]{4 + 2 \pi}}{2}$$
Solución numérica$$x_{1} = -47.7499971151681$$
$$x_{2} = -59.7500045773635$$
$$x_{3} = 9.33467244121067$$
$$x_{4} = 56.839324284264$$
$$x_{5} = 22.4448640738062$$
$$x_{6} = -53.9999975483649$$
$$x_{7} = -66.6812249695176$$
$$x_{8} = -92.0000002636978$$
$$x_{9} = -57.1126121486424$$
$$x_{10} = -93.999999147302$$
$$x_{11} = -36.3294965020417$$
$$x_{12} = -100.047201535159$$
$$x_{13} = 51.9999972356919$$
$$x_{14} = 78.2805087981279$$
$$x_{15} = -79.7115017902722$$
$$x_{16} = 46.2499951861813$$
$$x_{17} = 66.2499948309935$$
$$x_{18} = 301805.892775614$$
$$x_{19} = -95.7268424684403$$
$$x_{20} = -34.0038397447035$$
$$x_{21} = -45.749998586462$$
$$x_{22} = 36.2574038041822$$
$$x_{23} = 36.1407267379598$$
$$x_{24} = 67.5015395441636$$
$$x_{25} = -2.01139510040157$$
$$x_{26} = 90.0000002673152$$
$$x_{27} = -62.4091128685558$$
$$x_{28} = 72.2499980066085$$
$$x_{29} = 96.5964081016123$$
$$x_{30} = 62.0000001590408$$
$$x_{31} = -77.9999996215437$$
$$x_{32} = -58.0000038642258$$
$$x_{33} = 236.200856067296$$
$$x_{34} = -6.47324258852924$$
$$x_{35} = -31.7500199637014$$
$$x_{36} = 50.0166125691795$$
$$x_{37} = -77.1117062031673$$
$$x_{38} = 6.28193164498817$$
$$x_{39} = 19.6480845509533$$
$$x_{40} = 48.2499880225706$$
$$x_{41} = 54.7447559551347$$
$$x_{42} = 20.2499713754904$$
$$x_{43} = 85.9999994738053$$
$$x_{44} = -65.7500014297873$$
$$x_{45} = -18.2162279787762$$
$$x_{46} = 75.8434883004887$$
$$x_{47} = -40.0000051883885$$
$$x_{48} = 2.25674649188682$$
$$x_{49} = 29.9953940035126$$
$$x_{50} = 4.2485240495142$$
$$x_{51} = 41.891060064869$$
$$x_{52} = 1.73379088258958$$
$$x_{53} = 94.250000680315$$
$$x_{54} = 98.4624175278976$$
$$x_{55} = 16.2521266647491$$
$$x_{56} = -19.5271242846038$$
$$x_{57} = 79.9999995909809$$
$$x_{58} = 92.4828688930353$$
$$x_{59} = 85.8704266833141$$
$$x_{60} = -49.7541064589924$$
$$x_{61} = 72.1629787484219$$
$$x_{62} = -43.7499980637135$$
$$x_{63} = 64.24992617074$$
$$x_{64} = -20.6657633659863$$
$$x_{65} = 58.5572424883775$$
$$x_{66} = 12.2501449491354$$
$$x_{67} = 34.435169518078$$
$$x_{68} = 43.9999999002296$$
$$x_{69} = -69.9000101437904$$
$$x_{70} = -97.3682747479228$$
$$x_{71} = -17.7499599849434$$
$$x_{72} = -41.750011794144$$
$$x_{73} = 72.7288335788154$$
$$x_{74} = -37.7500052617678$$