El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\frac{1}{2} - 3 \sin{\left(x - \frac{\pi}{3} \right)} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = - \frac{\pi}{6} + \operatorname{acos}{\left(- \frac{1}{6} \right)}$$
$$x_{2} = - \operatorname{acos}{\left(- \frac{1}{6} \right)} + \frac{11 \pi}{6}$$
Solución numérica$$x_{1} = 98.2691217332605$$
$$x_{2} = -74.1835780557387$$
$$x_{3} = 76.6128693165713$$
$$x_{4} = 41.7204539686442$$
$$x_{5} = -17.6349102911225$$
$$x_{6} = 4.0213421255667$$
$$x_{7} = -5.0685396767633$$
$$x_{8} = 73.1363805045422$$
$$x_{9} = 22.8708980471055$$
$$x_{10} = -58.8105109462292$$
$$x_{11} = -2.26184318161289$$
$$x_{12} = -83.9432521749475$$
$$x_{13} = -90.2264374821271$$
$$x_{14} = 51.480128087853$$
$$x_{15} = -30.2012809054816$$
$$x_{16} = -67.9003927485592$$
$$x_{17} = -21.1113991031516$$
$$x_{18} = 48.0036392758238$$
$$x_{19} = 64.0464987022121$$
$$x_{20} = 66.8531951973626$$
$$x_{21} = 45.1969427806734$$
$$x_{22} = -49.0508368270204$$
$$x_{23} = 7.49783093759587$$
$$x_{24} = -61.6172074413796$$
$$x_{25} = 26.3473868591346$$
$$x_{26} = -419.758769950616$$
$$x_{27} = -36.4844662126612$$
$$x_{28} = 13.7810162447755$$
$$x_{29} = 54.2868245830034$$
$$x_{30} = 1.21464563041629$$
$$x_{31} = 32.6305721663142$$
$$x_{32} = -14.8282137959721$$
$$x_{33} = -55.3340221342$$
$$x_{34} = -23.9180955983021$$
$$x_{35} = -96.5096227893067$$
$$x_{36} = 79.4195658117217$$
$$x_{37} = -52.5273256390496$$
$$x_{38} = -27.3945844103312$$
$$x_{39} = 82.8960546237509$$
$$x_{40} = 38.9137574734938$$
$$x_{41} = -99.3163192844571$$
$$x_{42} = 16.5877127399259$$
$$x_{43} = -65.0936962534088$$
$$x_{44} = 35.4372686614646$$
$$x_{45} = 10.3045274327463$$
$$x_{46} = -39.9609550246904$$
$$x_{47} = 95.4624252381101$$
$$x_{48} = 85.7027511189013$$
$$x_{49} = 91.9859364260809$$
$$x_{50} = -2731.9709629927$$
$$x_{51} = -33.6777697175108$$
$$x_{52} = -8.54502848879247$$
$$x_{53} = -42.7676515198408$$
$$x_{54} = 108.028795852469$$
$$x_{55} = 70.3296840093917$$
$$x_{56} = 57.7633133950326$$
$$x_{57} = -86.7499486700979$$
$$x_{58} = -77.6600668677679$$
$$x_{59} = 20.064201551955$$
$$x_{60} = -93.0331339772775$$
$$x_{61} = -11.3517249839429$$
$$x_{62} = -46.24414033187$$
$$x_{63} = 60.570009890183$$
$$x_{64} = -80.4667633629183$$
$$x_{65} = 89.1792399309305$$
$$x_{66} = 29.154083354285$$
$$x_{67} = -71.3768815605883$$