El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\tan^{2}{\left(x \right)} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = 0$$
Solución numérica$$x_{1} = 78.53981615825$$
$$x_{2} = -25.1327417214108$$
$$x_{3} = 84.8230012117849$$
$$x_{4} = -91.1061874849821$$
$$x_{5} = -15.7079632968116$$
$$x_{6} = 91.1061859604104$$
$$x_{7} = -6.28318509494079$$
$$x_{8} = 56.5486675771117$$
$$x_{9} = -31.4159267482748$$
$$x_{10} = -12.5663701141083$$
$$x_{11} = 9.42477847373977$$
$$x_{12} = 15.7079634868755$$
$$x_{13} = 18.8495554527235$$
$$x_{14} = 97.389372828611$$
$$x_{15} = 72.2566310277136$$
$$x_{16} = 75.3982242393431$$
$$x_{17} = -100.530964462409$$
$$x_{18} = 47.1238887521935$$
$$x_{19} = 69.1150373568381$$
$$x_{20} = -21.9911485864129$$
$$x_{21} = 59.6902602145004$$
$$x_{22} = 31.4159270619219$$
$$x_{23} = 65.9734457532278$$
$$x_{24} = 94.2477796093519$$
$$x_{25} = -75.3982239115218$$
$$x_{26} = 50.2654824463153$$
$$x_{27} = 62.8318526257023$$
$$x_{28} = 21.9911485852339$$
$$x_{29} = 0$$
$$x_{30} = 3.14159153945546$$
$$x_{31} = -59.6902604582742$$
$$x_{32} = 34.5575189958939$$
$$x_{33} = -53.4070753298489$$
$$x_{34} = -65.973445764663$$
$$x_{35} = -81.6814090388783$$
$$x_{36} = -47.1238903089396$$
$$x_{37} = -97.3893724932976$$
$$x_{38} = 59.690260650792$$
$$x_{39} = -56.5486672888531$$
$$x_{40} = -43.9822971744223$$
$$x_{41} = -72.2566308398808$$
$$x_{42} = 25.1327401464195$$
$$x_{43} = 12.5663704145927$$
$$x_{44} = 6.28318528408307$$
$$x_{45} = -37.6991118775909$$
$$x_{46} = -84.8230005709274$$
$$x_{47} = -34.5575187016351$$
$$x_{48} = 43.9822971695754$$
$$x_{49} = -9.42477816679559$$
$$x_{50} = -78.5398158757739$$
$$x_{51} = 87.9645943363399$$
$$x_{52} = -69.1150388967924$$
$$x_{53} = 40.8407040393519$$
$$x_{54} = 37.6991120687848$$
$$x_{55} = -62.8318519640761$$
$$x_{56} = 28.2743338651162$$
$$x_{57} = 100.530964739312$$
$$x_{58} = -28.274333676669$$
$$x_{59} = -50.265482258314$$
$$x_{60} = 81.681409232902$$
$$x_{61} = -87.9645943581507$$
$$x_{62} = -3.14159313419367$$
$$x_{63} = -94.2477794213743$$
$$x_{64} = 53.4070756504516$$