El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\sin^{2}{\left(5 x \right)} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = 0$$
$$x_{2} = \frac{\pi}{5}$$
Solución numérica$$x_{1} = -69.7433569144854$$
$$x_{2} = 84.1946831658814$$
$$x_{3} = 65.9734457491227$$
$$x_{4} = -34.557519205621$$
$$x_{5} = 48.3805269332059$$
$$x_{6} = -93.6194610089695$$
$$x_{7} = -98.0176907745377$$
$$x_{8} = -25.7610597508393$$
$$x_{9} = 40.2123859980891$$
$$x_{10} = -11.9380521948355$$
$$x_{11} = 16.3362817677468$$
$$x_{12} = -49.6371639312598$$
$$x_{13} = -81.6814090256911$$
$$x_{14} = 26.389378404373$$
$$x_{15} = -20.1061929669246$$
$$x_{16} = -5.65486680327532$$
$$x_{17} = -10.0530964569873$$
$$x_{18} = -74.1415867308642$$
$$x_{19} = 76.0265421733494$$
$$x_{20} = 92.3628240109731$$
$$x_{21} = -15.7079632929332$$
$$x_{22} = 33.929200694348$$
$$x_{23} = 28.274333866221$$
$$x_{24} = -79.7964533604165$$
$$x_{25} = -21.9911485868914$$
$$x_{26} = 67.8584012116523$$
$$x_{27} = 23.8761041369349$$
$$x_{28} = -29.5309709494029$$
$$x_{29} = -32.0442450660112$$
$$x_{30} = 54.0353935769786$$
$$x_{31} = 0$$
$$x_{32} = -37.6991118714403$$
$$x_{33} = 1.88495559162432$$
$$x_{34} = 14.4513262974875$$
$$x_{35} = -43.9822971763454$$
$$x_{36} = -91.7345054955418$$
$$x_{37} = 18.2212374146874$$
$$x_{38} = -18.2212374239276$$
$$x_{39} = -96.1327352820571$$
$$x_{40} = 94.2477796093587$$
$$x_{41} = -35.8141561923158$$
$$x_{42} = -13.8230076087002$$
$$x_{43} = -86.0796386742076$$
$$x_{44} = -99.2743278089079$$
$$x_{45} = -89.8495498469889$$
$$x_{46} = 52.1504380951596$$
$$x_{47} = 11.9380521192924$$
$$x_{48} = 6.28318528631514$$
$$x_{49} = -27.6460153704533$$
$$x_{50} = 98.0176907659347$$
$$x_{51} = -42.0973414539295$$
$$x_{52} = 45.8672526601148$$
$$x_{53} = 62.2035345818541$$
$$x_{54} = -52.1504378480537$$
$$x_{55} = -87.9645943653118$$
$$x_{56} = 87.9645943291086$$
$$x_{57} = -71.6283124806418$$
$$x_{58} = 50.2654824467246$$
$$x_{59} = 77.9114978400645$$
$$x_{60} = 42.7256601331757$$
$$x_{61} = -42.0973415325808$$
$$x_{62} = -59.6902604490859$$
$$x_{63} = 43.9822971677305$$
$$x_{64} = -3.76991116829917$$
$$x_{65} = -76.0265421931435$$
$$x_{66} = -32.0442450344607$$
$$x_{67} = -47.752208332909$$
$$x_{68} = 55.9203492680481$$
$$x_{69} = -27.0176967671077$$
$$x_{70} = 8.16814097312701$$
$$x_{71} = -54.0353936131557$$
$$x_{72} = 82.3097274931756$$
$$x_{73} = -57.8053047763895$$
$$x_{74} = 21.9911485847669$$
$$x_{75} = -65.9734457689354$$
$$x_{76} = 32.0442449765555$$
$$x_{77} = 70.3716754615702$$
$$x_{78} = 99.9026464096681$$
$$x_{79} = -64.0884901021885$$
$$x_{80} = 30.1592895488569$$
$$x_{81} = 38.3274303412779$$
$$x_{82} = 10.0530963750204$$
$$x_{83} = 60.3185789165688$$
$$x_{84} = 72.2566310277817$$
$$x_{85} = 74.1415865572913$$