El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$5 \sin{\left(x \right)} + \cos{\left(x \right)} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = - \operatorname{atan}{\left(\frac{1}{5} \right)}$$
Solución numérica$$x_{1} = 21.7937530152787$$
$$x_{2} = -12.7637661742091$$
$$x_{3} = 12.3689750545093$$
$$x_{4} = 43.7849015904072$$
$$x_{5} = 65.7760501655358$$
$$x_{6} = -75.5956192460049$$
$$x_{7} = 87.7671987406643$$
$$x_{8} = -22.1885441349784$$
$$x_{9} = -6.48058086702947$$
$$x_{10} = -88.1619898603641$$
$$x_{11} = 50.0680868975868$$
$$x_{12} = -25.3301367885682$$
$$x_{13} = -69.3124339388253$$
$$x_{14} = 94.0503840478439$$
$$x_{15} = -94.4451751675437$$
$$x_{16} = -50.4628780172866$$
$$x_{17} = 34.3601236296378$$
$$x_{18} = 31.2185309760481$$
$$x_{19} = -44.179692710107$$
$$x_{20} = -34.7549147493376$$
$$x_{21} = 72.0592354727154$$
$$x_{22} = -41.0381000565172$$
$$x_{23} = -66.1708412852355$$
$$x_{24} = 78.342420779895$$
$$x_{25} = 81.4840134334847$$
$$x_{26} = 100.333569355023$$
$$x_{27} = -28.471729442158$$
$$x_{28} = -31.6133220957478$$
$$x_{29} = 6.08578974732971$$
$$x_{30} = -53.6044706708764$$
$$x_{31} = -59.887655978056$$
$$x_{32} = 46.926494243997$$
$$x_{33} = -100.728360474723$$
$$x_{34} = -47.3212853636968$$
$$x_{35} = -56.7460633244662$$
$$x_{36} = 97.1919767014337$$
$$x_{37} = 18.6521603616889$$
$$x_{38} = -81.8788045531845$$
$$x_{39} = 59.4928648583562$$
$$x_{40} = -7653.11709970459$$
$$x_{41} = 37.5017162832276$$
$$x_{42} = 53.2096795511766$$
$$x_{43} = -78.7372118995947$$
$$x_{44} = -9.62217352061926$$
$$x_{45} = 90.9087913942541$$
$$x_{46} = -15.9053588277988$$
$$x_{47} = 9.2273824009195$$
$$x_{48} = 62.634457511946$$
$$x_{49} = -37.8965074029274$$
$$x_{50} = 15.5105677080991$$
$$x_{51} = 2.94419709373991$$
$$x_{52} = 75.2008281263052$$
$$x_{53} = -0.197395559849881$$
$$x_{54} = -63.0292486316457$$
$$x_{55} = -72.4540265924151$$
$$x_{56} = 84.6256060870745$$
$$x_{57} = 28.0769383224583$$
$$x_{58} = 40.6433089368174$$
$$x_{59} = -91.3035825139539$$
$$x_{60} = -97.5867678211335$$
$$x_{61} = -1036.92297124448$$
$$x_{62} = -19.0469514813886$$
$$x_{63} = -85.0203972067743$$
$$x_{64} = 56.3512722047664$$
$$x_{65} = 24.9353456688685$$
$$x_{66} = 68.9176428191256$$
$$x_{67} = -3.33898821343967$$