El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\frac{\left(e^{x} - 1\right) \log{\left(\sin{\left(x \right)} + 1 \right)} \sin{\left(x \right)}}{1 - \cos{\left(x \right)}} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = \pi$$
Solución numérica$$x_{1} = -91.1061875318429$$
$$x_{2} = -97.3893724229835$$
$$x_{3} = -78.5398158754332$$
$$x_{4} = -53.4070752668442$$
$$x_{5} = -84.8230007891166$$
$$x_{6} = -21.9911494888989$$
$$x_{7} = -91.1061871974817$$
$$x_{8} = -40.8407051238727$$
$$x_{9} = -34.557519883539$$
$$x_{10} = -78.5398170386325$$
$$x_{11} = -15.7079637559661$$
$$x_{12} = -9.4247795302434$$
$$x_{13} = -9.42477811059283$$
$$x_{14} = -97.3893727945466$$
$$x_{15} = -34.5575195488071$$
$$x_{16} = -9.42477848887494$$
$$x_{17} = -72.256631441579$$
$$x_{18} = -84.823001955334$$
$$x_{19} = -59.6902609086861$$
$$x_{20} = -72.2566308246551$$
$$x_{21} = -3.14159324461966$$
$$x_{22} = -21.9911490234513$$
$$x_{23} = -28.2743346664789$$
$$x_{24} = -59.690260456213$$
$$x_{25} = -15.7079632957544$$
$$x_{26} = -65.9734461762326$$
$$x_{27} = -84.8230022778128$$
$$x_{28} = -40.840703606424$$
$$x_{29} = -47.1238900426854$$
$$x_{30} = -47.1238903786051$$
$$x_{31} = -34.5575187057276$$
$$x_{32} = -65.9734466492446$$
$$x_{33} = -147.654855422159$$
$$x_{34} = -65.9734457632677$$
$$x_{35} = -53.4070756416872$$
$$x_{36} = -15.707964390725$$
$$x_{37} = -3.14159106869772$$
$$x_{38} = -59.6902615586661$$
$$x_{39} = -40.8407048013772$$
$$x_{40} = -28.2743342885761$$
$$x_{41} = -21.9911485863008$$
$$x_{42} = -28.274333660616$$
$$x_{43} = -78.5398167021923$$
$$x_{44} = -3.14159289290182$$
$$x_{45} = -72.2566318234415$$