El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\log{\left(\cos{\left(2 x - 3 \right)} \right)} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = \frac{3}{2}$$
$$x_{2} = \frac{3}{2} + \pi$$
Solución numérica$$x_{1} = 58.0486676692494$$
$$x_{2} = -7.92477827673125$$
$$x_{3} = 73.7566312191606$$
$$x_{4} = 70.6150381336808$$
$$x_{5} = 92.6061870252117$$
$$x_{6} = -26.7743338803417$$
$$x_{7} = 1.50000036628856$$
$$x_{8} = -77.0398164814975$$
$$x_{9} = 39.1991118347172$$
$$x_{10} = 20.3495558571988$$
$$x_{11} = 92.6061867166268$$
$$x_{12} = -70.7566310225095$$
$$x_{13} = -58.1902602704114$$
$$x_{14} = 36.0575190562039$$
$$x_{15} = -42.4822967419943$$
$$x_{16} = 42.3407044376452$$
$$x_{17} = -42.482296664075$$
$$x_{18} = -55.0486679240968$$
$$x_{19} = 64.3318530181245$$
$$x_{20} = -14.2079631075661$$
$$x_{21} = -4.78318530889195$$
$$x_{22} = 98.8893714973164$$
$$x_{23} = 26.6327412439176$$
$$x_{24} = -80.1814088517395$$
$$x_{25} = -17.349555936709$$
$$x_{26} = 7.78318547397097$$
$$x_{27} = 67.4734460248885$$
$$x_{28} = -1.6415927232245$$
$$x_{29} = 51.765482637324$$
$$x_{30} = 95.7477798011181$$
$$x_{31} = -89.6061870448566$$
$$x_{32} = 45.4822977551994$$
$$x_{33} = 1.50000053642386$$
$$x_{34} = -92.747779593219$$
$$x_{35} = -23.6327413036338$$
$$x_{36} = -20.4911480653688$$
$$x_{37} = -61.3318533698126$$
$$x_{38} = 14.0663704209511$$
$$x_{39} = -39.3407047850781$$
$$x_{40} = 4.64159265218678$$
$$x_{41} = 17.2079632627963$$
$$x_{42} = -20.4911482270984$$
$$x_{43} = -64.4734452982655$$
$$x_{44} = -36.1991116890236$$
$$x_{45} = 23.4911489192456$$
$$x_{46} = 48.6238895504951$$
$$x_{47} = -86.4645938566005$$
$$x_{48} = -67.6150384644424$$
$$x_{49} = 80.039816271268$$
$$x_{50} = 61.1902604068607$$
$$x_{51} = 86.3230015986475$$
$$x_{52} = -48.7654824515488$$
$$x_{53} = -20.4911481873041$$
$$x_{54} = -99.0309650408064$$
$$x_{55} = -95.8893718226417$$
$$x_{56} = -64.4734452604177$$
$$x_{57} = -86.4645938548753$$
$$x_{58} = -45.6238898840372$$
$$x_{59} = -17.3495562007102$$
$$x_{60} = 67.4734463806069$$
$$x_{61} = 29.7743340555976$$
$$x_{62} = 26.63274096705$$
$$x_{63} = 89.4645945782532$$
$$x_{64} = 83.1814089792103$$
$$x_{65} = 4.64159238332314$$
$$x_{66} = 70.6150384310865$$
$$x_{67} = 48.6238898372022$$
$$x_{68} = -83.3230019549508$$
$$x_{69} = 45.4822974719891$$
$$x_{70} = 23.4911491425042$$