El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\sin^{3}{\left(3 x - 2 \right)} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = \frac{2}{3}$$
$$x_{2} = \frac{2}{3} + \frac{\pi}{3}$$
Solución numérica$$x_{1} = 1.71389404463876$$
$$x_{2} = 27.8938330959283$$
$$x_{3} = -75.7787471639778$$
$$x_{4} = -33.8908618441083$$
$$x_{5} = 95.9616566183181$$
$$x_{6} = 89.6784538650516$$
$$x_{7} = 32.0825765676626$$
$$x_{8} = -5.61654870322469$$
$$x_{9} = 51.9793537498367$$
$$x_{10} = -7.7109237958677$$
$$x_{11} = 60.3569018405966$$
$$x_{12} = 76.064873466918$$
$$x_{13} = 100.150447119125$$
$$x_{14} = -53.7875964551087$$
$$x_{15} = 45.6961794601415$$
$$x_{16} = -38.0796184836329$$
$$x_{17} = 56.168152696259$$
$$x_{18} = 42.5545513002348$$
$$x_{19} = -82.0619201981799$$
$$x_{20} = 73.9705052364441$$
$$x_{21} = -89.3923262123761$$
$$x_{22} = 49.884983358752$$
$$x_{23} = -88.3451570725162$$
$$x_{24} = -44.3627924553036$$
$$x_{25} = 7.99705054889369$$
$$x_{26} = 64.5456928440946$$
$$x_{27} = 82.3480521786133$$
$$x_{28} = -27.60769871452$$
$$x_{29} = -20.2772510148504$$
$$x_{30} = 86.5368364421101$$
$$x_{31} = -42.2683970360523$$
$$x_{32} = 98.0560229781563$$
$$x_{33} = 71.876133490009$$
$$x_{34} = 14.2802270021338$$
$$x_{35} = -97.7698979694788$$
$$x_{36} = -49.5988486331016$$
$$x_{37} = 20.5634125980021$$
$$x_{38} = 10.0914293219122$$
$$x_{39} = 58.2625287061092$$
$$x_{40} = 80.2536795933769$$
$$x_{41} = 5.90268270146609$$
$$x_{42} = -29.7020745485101$$
$$x_{43} = -66.35396687869$$
$$x_{44} = -99.864291640543$$
$$x_{45} = 36.2713778388705$$
$$x_{46} = -71.5899984533367$$
$$x_{47} = 29.9882021777671$$
$$x_{48} = -11.8997168945453$$
$$x_{49} = -93.5811481686244$$
$$x_{50} = -51.6932252503218$$
$$x_{51} = -57.9764041848171$$
$$x_{52} = -23.4188547378102$$
$$x_{53} = -9.80529557362095$$
$$x_{54} = 67.6873184270522$$
$$x_{55} = -31.7964458989057$$
$$x_{56} = -13.9941010956364$$
$$x_{57} = 12.1858544111764$$
$$x_{58} = 78.1593005293549$$
$$x_{59} = -95.6755264834016$$
$$x_{60} = 16.3746013958871$$
$$x_{61} = 23.7050377346461$$
$$x_{62} = -73.6843758966484$$
$$x_{63} = -79.9675554577484$$
$$x_{64} = 54.0737246467582$$
$$x_{65} = -16.0884678249345$$
$$x_{66} = 38.3657515784722$$
$$x_{67} = -60.0707692748171$$
$$x_{68} = -67.4011472487951$$
$$x_{69} = -77.8731484812712$$
$$x_{70} = -55.8820055289107$$
$$x_{71} = -45.4099903293406$$
$$x_{72} = 34.1770039031775$$
$$x_{73} = -1.42772253455006$$
$$x_{74} = -35.9852526988171$$
$$x_{75} = 93.8672834894131$$