El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\frac{2 \sin{\left(x \right)} - \cos{\left(x \right)}}{10} \left(\sin{\left(x \right)} + 2 \cos^{2}{\left(x \right)}\right) + \frac{\sqrt{5}}{10} \log{\left(\tan{\left(\frac{x}{2} \right)} + \frac{\operatorname{atan}{\left(2 \right)}}{2} \right)} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución numérica$$x_{1} = 0.55356224024737$$
$$x_{2} = -49.7119202171893$$
$$x_{3} = -24.579178988471$$
$$x_{4} = 82.234971233582$$
$$x_{5} = -62.2782908315485$$
$$x_{6} = 44.5358593905045$$
$$x_{7} = 88.5181565407616$$
$$x_{8} = -18.2959936812914$$
$$x_{9} = 13.1199328546065$$
$$x_{10} = -30.8623642956506$$
$$x_{11} = 94.8013418479412$$
$$x_{12} = 6.83674754742696$$
$$x_{13} = 75.9517859264024$$
$$x_{14} = 25.6863034689657$$
$$x_{15} = 63.3854153120432$$
$$x_{16} = -37.1455496028302$$
$$x_{17} = 31.9694887761453$$
$$x_{18} = 57.1022300048636$$
$$x_{19} = -68.5614761387281$$
$$x_{20} = -81.1278467530873$$
$$x_{21} = 69.6686006192228$$
$$x_{22} = -74.8446614459077$$
$$x_{23} = -12.0128083741118$$
$$x_{24} = 50.8190446976841$$
$$x_{25} = -93.6942173674464$$
$$x_{26} = -5.72962306693222$$
$$x_{27} = -43.4287349100097$$
$$x_{28} = 19.4031181617861$$
$$x_{29} = -99.977402674626$$
$$x_{30} = -55.9951055243689$$
$$x_{31} = 101.084527155121$$
$$x_{32} = 38.2526740833249$$
$$x_{33} = -87.4110320602668$$