El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\cot{\left(3 x - \frac{\pi}{12} \right)} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = - \frac{5 \pi}{36}$$
Solución numérica$$x_{1} = 38.3099770812755$$
$$x_{2} = 20.5076187109334$$
$$x_{3} = -73.7401608967604$$
$$x_{4} = 95.9058423970884$$
$$x_{5} = -62.2209878335978$$
$$x_{6} = -60.1265927312047$$
$$x_{7} = -36.0410490536829$$
$$x_{8} = 36.2155819788823$$
$$x_{9} = 10.0356431989674$$
$$x_{10} = 18.4132236085402$$
$$x_{11} = -58.0321976288115$$
$$x_{12} = -99.9200996766754$$
$$x_{13} = -55.9378025264183$$
$$x_{14} = 22.6020138133266$$
$$x_{15} = -67.4569755895808$$
$$x_{16} = -33.9466539512897$$
$$x_{17} = -29.7578637465033$$
$$x_{18} = -51.7490123216319$$
$$x_{19} = -95.731309471889$$
$$x_{20} = -80.02334620394$$
$$x_{21} = -27.6634686441101$$
$$x_{22} = -7.76671517137477$$
$$x_{23} = -49.6546172192387$$
$$x_{24} = 12.1300383013606$$
$$x_{25} = -53.8434074240251$$
$$x_{26} = 78.1034840267462$$
$$x_{27} = -5.67232006898157$$
$$x_{28} = 47.7347550420449$$
$$x_{29} = 62.3955207587973$$
$$x_{30} = 54.0179403492245$$
$$x_{31} = -3.57792496658838$$
$$x_{32} = 80.1978791291394$$
$$x_{33} = -9.86111027376796$$
$$x_{34} = 86.481064436319$$
$$x_{35} = -64.315382935991$$
$$x_{36} = 5.846852994181$$
$$x_{37} = 23.6492113645232$$
$$x_{38} = -38.1354441560761$$
$$x_{39} = 3.75245789178781$$
$$x_{40} = -47.5602221168455$$
$$x_{41} = -23.4746784393237$$
$$x_{42} = 27.8380015693096$$
$$x_{43} = 90.6698546411054$$
$$x_{44} = -45.4658270144523$$
$$x_{45} = -93.6369143694958$$
$$x_{46} = -91.5425192671026$$
$$x_{47} = -86.3065315111196$$
$$x_{48} = -14.0499004785544$$
$$x_{49} = 91.717052192302$$
$$x_{50} = -77.9289511015468$$
$$x_{51} = 64.4899158611905$$
$$x_{52} = -65.3625804871876$$
$$x_{53} = -18.2386906833407$$
$$x_{54} = -75.8345559991536$$
$$x_{55} = 73.9146938219599$$
$$x_{56} = 16.318828506147$$
$$x_{57} = -87.3537290623162$$
$$x_{58} = 44.5931623884551$$
$$x_{59} = 25.7436064669164$$
$$x_{60} = -69.551370691974$$
$$x_{61} = 82.2922742315326$$
$$x_{62} = 60.3011256564041$$
$$x_{63} = 51.9235452468313$$
$$x_{64} = 71.8202987195667$$
$$x_{65} = 66.5843109635837$$
$$x_{66} = 1.65806278939461$$
$$x_{67} = -1.48352986419518$$
$$x_{68} = 67.6315085147803$$
$$x_{69} = 100.094632601875$$
$$x_{70} = 29.9323966717028$$
$$x_{71} = 98.0002374994816$$
$$x_{72} = 49.8291501444381$$
$$x_{73} = 76.0090889243531$$
$$x_{74} = -20.3330857857339$$
$$x_{75} = -82.1177413063332$$
$$x_{76} = -11.9555053761612$$
$$x_{77} = 40.4043721836687$$
$$x_{78} = -40.2298392584693$$
$$x_{79} = -97.8257045742822$$
$$x_{80} = 34.1211868764891$$
$$x_{81} = 45.6403599396517$$
$$x_{82} = 0.610865238198015$$
$$x_{83} = -43.3714319120591$$
$$x_{84} = 32.0267917740959$$
$$x_{85} = -89.4481241647094$$
$$x_{86} = -84.2121364087264$$
$$x_{87} = -21.3802833369305$$
$$x_{88} = 88.5754595387122$$
$$x_{89} = 93.8114472946952$$
$$x_{90} = 14.2244334037538$$
$$x_{91} = 56.1123354516177$$
$$x_{92} = 58.2067305540109$$
$$x_{93} = 69.7259036171735$$
$$x_{94} = -31.8522588488965$$
$$x_{95} = 42.4987672860619$$
$$x_{96} = -16.1442955809475$$
$$x_{97} = -42.3242343608625$$
$$x_{98} = -71.6457657943672$$
$$x_{99} = 84.3866693339258$$
$$x_{100} = -25.5690735417169$$
$$x_{101} = 7.9412480965742$$