El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$2^{\tan{\left(x \right)}} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución numérica$$x_{1} = 48.7073540859457$$
$$x_{2} = -7.82965430390267$$
$$x_{3} = -73.8047295165375$$
$$x_{4} = 83.2691115938597$$
$$x_{5} = 67.5662499485623$$
$$x_{6} = 70.7004367421289$$
$$x_{7} = -64.3787757341179$$
$$x_{8} = -42.3893852017131$$
$$x_{9} = 83.2640549367022$$
$$x_{10} = 4.72228142980768$$
$$x_{11} = 17.2980613697606$$
$$x_{12} = 7.86469680032286$$
$$x_{13} = -58.1010405018434$$
$$x_{14} = 45.5731417149897$$
$$x_{15} = 1.58997886028416$$
$$x_{16} = -80.0901298645685$$
$$x_{17} = -4.69243797423823$$
$$x_{18} = 36.1533738947306$$
$$x_{19} = 29.8485778266712$$
$$x_{20} = 14.1618862718162$$
$$x_{21} = 26.7139332766024$$
$$x_{22} = -26.6829974580402$$
$$x_{23} = -36.1125020457893$$
$$x_{24} = -39.2692794059909$$
$$x_{25} = -70.6642706380685$$
$$x_{26} = -102.079648539334$$
$$x_{27} = -29.8212594818284$$
$$x_{28} = -92.661722941571$$
$$x_{29} = -70.6647711245903$$
$$x_{30} = -14.1246629166962$$
$$x_{31} = -80.0855631478699$$
$$x_{32} = 61.281323599416$$
$$x_{33} = -51.8129444765024$$
$$x_{34} = -17.2736065659628$$
$$x_{35} = -95.7966420513885$$
$$x_{36} = 39.2884926073468$$
$$x_{37} = -92.6549735195655$$
$$x_{38} = 61.2788463692566$$
$$x_{39} = 92.6932429752865$$
$$x_{40} = 89.5596629812267$$
$$x_{41} = 23.5809445076966$$
$$x_{42} = -48.6736102850766$$
$$x_{43} = -20.39995803275$$