El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\cot{\left(1 - \left|{x}\right| \right)} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = 1 + \frac{\pi}{2}$$
Solución numérica$$x_{1} = -99.9601685880785$$
$$x_{2} = -27.7035375555132$$
$$x_{3} = 90.5353906273091$$
$$x_{4} = 87.3937979737193$$
$$x_{5} = 24.5619449019235$$
$$x_{6} = 84.2522053201295$$
$$x_{7} = 49.6946861306418$$
$$x_{8} = 81.1106126665397$$
$$x_{9} = 30.845130209103$$
$$x_{10} = 99.9601685880785$$
$$x_{11} = 59.1194640914112$$
$$x_{12} = 55.9778714378214$$
$$x_{13} = 21.4203522483337$$
$$x_{14} = -8.85398163397448$$
$$x_{15} = -43.4115008234622$$
$$x_{16} = -2.5707963267949$$
$$x_{17} = -46.553093477052$$
$$x_{18} = -87.3937979737193$$
$$x_{19} = -5.71238898038469$$
$$x_{20} = 71.6858347057703$$
$$x_{21} = 8.85398163397448$$
$$x_{22} = -21.4203522483337$$
$$x_{23} = 18.2787595947439$$
$$x_{24} = 62.261056745001$$
$$x_{25} = -33.9867228626928$$
$$x_{26} = 27.7035375555132$$
$$x_{27} = -65.4026493985908$$
$$x_{28} = 2.5707963267949$$
$$x_{29} = -15.1371669411541$$
$$x_{30} = -81.1106126665397$$
$$x_{31} = -90.5353906273091$$
$$x_{32} = -49.6946861306418$$
$$x_{33} = 68.5442420521806$$
$$x_{34} = 77.9690200129499$$
$$x_{35} = 65.4026493985908$$
$$x_{36} = -24.5619449019235$$
$$x_{37} = -30.845130209103$$
$$x_{38} = -59.1194640914112$$
$$x_{39} = -96.8185759344887$$
$$x_{40} = 40.2699081698724$$
$$x_{41} = -62.261056745001$$
$$x_{42} = -40.2699081698724$$
$$x_{43} = -11.9955742875643$$
$$x_{44} = -37.1283155162826$$
$$x_{45} = 5.71238898038469$$
$$x_{46} = 15.1371669411541$$
$$x_{47} = 52.8362787842316$$
$$x_{48} = 43.4115008234622$$
$$x_{49} = -71.6858347057703$$
$$x_{50} = 11.9955742875643$$
$$x_{51} = 46.553093477052$$
$$x_{52} = 37.1283155162826$$
$$x_{53} = 74.8274273593601$$
$$x_{54} = 96.8185759344887$$
$$x_{55} = -93.6769832808989$$
$$x_{56} = -77.9690200129499$$
$$x_{57} = -18.2787595947439$$
$$x_{58} = -74.8274273593601$$
$$x_{59} = 33.9867228626928$$
$$x_{60} = -52.8362787842316$$
$$x_{61} = -68.5442420521806$$
$$x_{62} = -55.9778714378214$$
$$x_{63} = 93.6769832808989$$
$$x_{64} = -84.2522053201295$$