El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\left(\tan{\left(8 x \right)} - \cot{\left(8 x \right)}\right) - \frac{2 \cos^{2}{\left(16 x \right)}}{\sin{\left(16 x \right)}} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = - \frac{\pi}{32}$$
$$x_{2} = \frac{\pi}{32}$$
Solución numérica$$x_{1} = -16.002487579223$$
$$x_{2} = 94.1496048372691$$
$$x_{3} = -33.9684705669396$$
$$x_{4} = -89.7317401681585$$
$$x_{5} = -36.0301407458579$$
$$x_{6} = -5.6941366846315$$
$$x_{7} = 22.2856728864026$$
$$x_{8} = -61.7519305971244$$
$$x_{9} = 78.2452920284708$$
$$x_{10} = 10.0138265833175$$
$$x_{11} = -19.7331288553609$$
$$x_{12} = 82.2704576158827$$
$$x_{13} = -27.9798095710341$$
$$x_{14} = -47.8111131968197$$
$$x_{15} = 11.5846229101124$$
$$x_{16} = -99.9419162923253$$
$$x_{17} = 86.1974484328699$$
$$x_{18} = 96.0149254753381$$
$$x_{19} = 2.25801971976766$$
$$x_{20} = 14.2353417115787$$
$$x_{21} = -23.7582944427728$$
$$x_{22} = -59.9847847294801$$
$$x_{23} = -81.877758534184$$
$$x_{24} = 69.9986113127976$$
$$x_{25} = -80.012437896115$$
$$x_{26} = -91.6952355766521$$
$$x_{27} = 18.2605072989907$$
$$x_{28} = 4.1233403578366$$
$$x_{29} = 53.9961237335746$$
$$x_{30} = 32.004975158446$$
$$x_{31} = -3.73064127613788$$
$$x_{32} = -67.7405915930299$$
$$x_{33} = -7.7558068635498$$
$$x_{34} = -34.2629948782137$$
$$x_{35} = -96.0149254753381$$
$$x_{36} = -87.4737204483908$$
$$x_{37} = -21.7947990342792$$
$$x_{38} = 64.9916980211388$$
$$x_{39} = -45.7494430179014$$
$$x_{40} = 49.9709581461627$$
$$x_{41} = -41.7242774304894$$
$$x_{42} = 71.9621067212912$$
$$x_{43} = 36.2264902867073$$
$$x_{44} = -49.7746086053133$$
$$x_{45} = 46.2403168700248$$
$$x_{46} = -43.7859476094077$$
$$x_{47} = 37.8954613839269$$
$$x_{48} = 100.236440603599$$
$$x_{49} = 91.9897598879261$$
$$x_{50} = 60.5738333520282$$
$$x_{51} = -77.9507677171967$$
$$x_{52} = -58.0212893209865$$
$$x_{53} = 20.2240027074843$$
$$x_{54} = 66.2679700366597$$
$$x_{55} = -63.715426005618$$
$$x_{56} = 62.2428044492478$$
$$x_{57} = -29.7469554386784$$
$$x_{58} = 40.2516558741192$$
$$x_{59} = 80.3069622073891$$
$$x_{60} = -65.7770961845363$$
$$x_{61} = 58.3158136322605$$
$$x_{62} = 56.3523182237669$$
$$x_{63} = -83.7430791722529$$
$$x_{64} = 61.4574062858503$$
$$x_{65} = 26.0163141625405$$
$$x_{66} = 5.98866099590554$$
$$x_{67} = -87.7682447596649$$
$$x_{68} = 90.1244392498572$$
$$x_{69} = 88.2591186117883$$
$$x_{70} = 84.2339530243763$$
$$x_{71} = 64.2062998577414$$
$$x_{72} = -1.76714586764426$$
$$x_{73} = -37.9936361543516$$
$$x_{74} = -14.0389921707294$$
$$x_{75} = 42.2151512826128$$
$$x_{76} = -71.7657571804418$$
$$x_{77} = -32.004975158446$$
$$x_{78} = 7.65763209312512$$
$$x_{79} = 74.0237769002095$$
$$x_{80} = -11.9773219918111$$
$$x_{81} = 75.9872723087031$$
$$x_{82} = 27.9798095710341$$
$$x_{83} = 97.880246113407$$
$$x_{84} = -93.7569057555704$$
$$x_{85} = -55.9596191420682$$
$$x_{86} = 44.2768214615311$$
$$x_{87} = 15.5116137270996$$
$$x_{88} = -53.9961237335746$$
$$x_{89} = -10.0138265833175$$
$$x_{90} = 30.0414797499524$$
$$x_{91} = -75.9872723087031$$
$$x_{92} = -18.5550316102647$$
$$x_{93} = 48.007462737669$$
$$x_{94} = -97.9784208838317$$
$$x_{95} = -73.9256021297848$$
$$x_{96} = 52.0326283250809$$
$$x_{97} = 24.2491682948962$$
$$x_{98} = -39.7607820219958$$