El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$3 \sin{\left(x + \frac{\pi}{3} \right)} + 3 = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = - \frac{5 \pi}{6}$$
$$x_{2} = \frac{7 \pi}{6}$$
Solución numérica$$x_{1} = 3.66519092286611$$
$$x_{2} = -46.6002907118192$$
$$x_{3} = -27.7507346247054$$
$$x_{4} = -71.7330322690909$$
$$x_{5} = 97.9129705388194$$
$$x_{6} = -34.0339209018893$$
$$x_{7} = 35.0811175860113$$
$$x_{8} = -8.90117957011075$$
$$x_{9} = -71.7330325806169$$
$$x_{10} = -78.0162180479322$$
$$x_{11} = 41.3643036022671$$
$$x_{12} = -46.6002914958496$$
$$x_{13} = 53.9306741489271$$
$$x_{14} = -65.4498464335014$$
$$x_{15} = 72.7802303022061$$
$$x_{16} = 97.9129711103689$$
$$x_{17} = -8.90117876525242$$
$$x_{18} = -96.8657730764531$$
$$x_{19} = 22.5147478673811$$
$$x_{20} = 53.9306739481032$$
$$x_{21} = -34.0339201083054$$
$$x_{22} = -40.3171055253934$$
$$x_{23} = -27.7507351061628$$
$$x_{24} = -27.7507354478924$$
$$x_{25} = 85.3466007591799$$
$$x_{26} = 3.66519163307997$$
$$x_{27} = -15.1843644158927$$
$$x_{28} = 60.2138588216583$$
$$x_{29} = 9.94837624459935$$
$$x_{30} = -90.5825886498278$$
$$x_{31} = 91.6297850397432$$
$$x_{32} = -15.1843640043429$$
$$x_{33} = -40.3171061212146$$
$$x_{34} = -2.6179935547329$$
$$x_{35} = 85.3465999669243$$
$$x_{36} = 47.6474880744246$$
$$x_{37} = -21.4675495511349$$
$$x_{38} = 79.0634147422311$$
$$x_{39} = 9.94837678485442$$
$$x_{40} = 47.6474879940301$$
$$x_{41} = 53.9306733915096$$
$$x_{42} = 60.213859223786$$
$$x_{43} = 22.5147472034056$$
$$x_{44} = 91.6297852261896$$
$$x_{45} = 79.0634155455067$$
$$x_{46} = 16.231562520136$$
$$x_{47} = -78.0162175464145$$
$$x_{48} = -21.4675492829431$$
$$x_{49} = 66.4970443621975$$
$$x_{50} = 97.9129712746173$$
$$x_{51} = -15.1843647726834$$
$$x_{52} = -90.5825878689909$$
$$x_{53} = -59.1666619301013$$
$$x_{54} = 60.2138596644571$$
$$x_{55} = -21.467549955294$$
$$x_{56} = 72.7802295423785$$
$$x_{57} = 66.4970450174627$$
$$x_{58} = 66.4970446206683$$
$$x_{59} = -40.317106228479$$
$$x_{60} = -96.8657738820537$$
$$x_{61} = -65.4498466272906$$
$$x_{62} = -59.1666621329751$$
$$x_{63} = 16.2315616862384$$
$$x_{64} = 91.629785949731$$
$$x_{65} = -84.2994031904943$$
$$x_{66} = 16.2315620579542$$
$$x_{67} = 41.3643028125296$$
$$x_{68} = 35.0811182902876$$
$$x_{69} = 47.6474887914533$$
$$x_{70} = -59.1666611578459$$
$$x_{71} = -84.2994026839722$$
$$x_{72} = 9.94837702122506$$
$$x_{73} = -52.8834759207986$$
$$x_{74} = 28.7979331490089$$
$$x_{75} = -84.2994033796035$$
$$x_{76} = -34.0339203797704$$
$$x_{77} = -52.8834767261331$$
$$x_{78} = -71.7330317700361$$
$$x_{79} = -2.61799434172942$$
$$x_{80} = 35.0811183901833$$
$$x_{81} = 3.66519094039316$$
$$x_{82} = 28.7979323848102$$
$$x_{83} = -65.4498471139063$$
$$x_{84} = -78.0162172395008$$
$$x_{85} = 22.5147475317097$$