El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\pi \frac{\sin{\left(2 x \right)} \cos{\left(2 x \right)}}{2} + \left(\frac{\sin{\left(x \right)} \cos{\left(x \right)}}{\pi} + \frac{1}{2 \pi}\right) = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución numérica$$x_{1} = 64.3457456046531$$
$$x_{2} = -36.1852193102203$$
$$x_{3} = -14.1940707350917$$
$$x_{4} = -7.91088542791213$$
$$x_{5} = -59.736505374425$$
$$x_{6} = 84.037603483527$$
$$x_{7} = 94.2015346514749$$
$$x_{8} = 6.23694035096067$$
$$x_{9} = 80.0537088726021$$
$$x_{10} = 68.329640215578$$
$$x_{11} = 51.7793749902939$$
$$x_{12} = 87.9183493442953$$
$$x_{13} = -54.1924732744239$$
$$x_{14} = 70.0035852925295$$
$$x_{15} = -47.9092879672443$$
$$x_{16} = -95.8754797284263$$
$$x_{17} = 4.03013956714381$$
$$x_{18} = -99.6424180013194$$
$$x_{19} = -88.7499924639117$$
$$x_{20} = 90.3207887907066$$
$$x_{21} = -37.7453567992964$$
$$x_{22} = 91.994733867658$$
$$x_{23} = -39.9521575831133$$
$$x_{24} = 43.9360521940382$$
$$x_{25} = -44.028542106476$$
$$x_{26} = 86.3368941797817$$
$$x_{27} = -69.9004365423729$$
$$x_{28} = -19.6349540849362$$
$$x_{29} = -55.6601208510623$$
$$x_{30} = 42.3545970295246$$
$$x_{31} = -3.92699081698724$$
$$x_{32} = -61.9433061582418$$
$$x_{33} = -88.0108392567331$$
$$x_{34} = -76.1836218495525$$
$$x_{35} = 62.0464549083984$$
$$x_{36} = 0.888546913554016$$
$$x_{37} = 71.4712328691678$$
$$x_{38} = -77.6512694261908$$
$$x_{39} = 14.0802631472164$$
$$x_{40} = -33.0436266566305$$
$$x_{41} = 10.3133248743234$$
$$x_{42} = 20.363448454396$$
$$x_{43} = -15.7542082241679$$
$$x_{44} = 54.2956220245805$$
$$x_{45} = 24.3473430653209$$
$$x_{46} = -11.6778237008052$$
$$x_{47} = 28.2280889260892$$
$$x_{48} = 40.0553063332699$$
$$x_{49} = -29.9020340030407$$
$$x_{50} = -45.6099972709897$$
$$x_{51} = -23.6188486958611$$
$$x_{52} = 58.0625602974735$$
$$x_{53} = -81.7276539495535$$
$$x_{54} = -74.509676772601$$
$$x_{55} = 21.9449036189096$$
$$x_{56} = 95.1363265212478$$
$$x_{57} = -33.6689722759337$$
$$x_{58} = 22.8796954886826$$
$$x_{59} = -67.6011458461182$$
$$x_{60} = -17.9610090079847$$
$$x_{61} = 29.7882264151654$$
$$x_{62} = 48.0124367174009$$
$$x_{63} = 36.071411722345$$
$$x_{64} = -66.0196906816046$$
$$x_{65} = 26.0212881422724$$
$$x_{66} = 18.0641577581413$$
$$x_{67} = -41.6261026600648$$
$$x_{68} = -85.6083998103219$$
$$x_{69} = -1.62770012073255$$
$$x_{70} = 50.2192375012178$$
$$x_{71} = 65.9272007691667$$
$$x_{72} = -58.1763678853488$$
$$x_{73} = -83.9344547333704$$
$$x_{74} = -22.0373935313475$$
$$x_{75} = 72.2103860763463$$
$$x_{76} = 76.2867705997091$$
$$x_{77} = -51.8931825781692$$
$$x_{78} = -63.6172512351933$$
$$x_{79} = 46.3384916404494$$
$$x_{80} = -0.0462449562189172$$
$$x_{81} = 7.79707784003683$$
$$x_{82} = 98.2779191748376$$
$$x_{83} = -91.8915851175014$$
$$x_{84} = -80.1675164604774$$
$$x_{85} = -98.174770424681$$
$$x_{86} = -73.8843311532978$$
$$x_{87} = -25.9181393921158$$
$$x_{88} = 32.3044734494519$$
$$x_{89} = 2.35619449019234$$