El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\left(- x + \left(\left(\left|{x - 3}\right| - 2 \left|{x - 1}\right|\right) + 2 \left|{x}\right|\right)\right) + 1 = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución numérica$$x_{1} = 46$$
$$x_{2} = 3.06177606177606$$
$$x_{3} = 3.04953560371517$$
$$x_{4} = 58$$
$$x_{5} = 50$$
$$x_{6} = 80$$
$$x_{7} = 3.05992509363296$$
$$x_{8} = 3.08205128205128$$
$$x_{9} = 60$$
$$x_{10} = 26$$
$$x_{11} = 74$$
$$x_{12} = 3.0704845814978$$
$$x_{13} = 3.07305936073059$$
$$x_{14} = 72$$
$$x_{15} = 44$$
$$x_{16} = 3.04221635883905$$
$$x_{17} = 3.17582417582418$$
$$x_{18} = 3.21333333333333$$
$$x_{19} = 14$$
$$x_{20} = 3.06808510638298$$
$$x_{21} = 3.11510791366906$$
$$x_{22} = 34$$
$$x_{23} = 3.19277108433735$$
$$x_{24} = 86$$
$$x_{25} = 36$$
$$x_{26} = 3.14953271028037$$
$$x_{27} = 3.07881773399015$$
$$x_{28} = 3.05211726384365$$
$$x_{29} = 3.08938547486034$$
$$x_{30} = 78$$
$$x_{31} = 3.09815950920245$$
$$x_{32} = 3.04610951008646$$
$$x_{33} = 48$$
$$x_{34} = 3$$
$$x_{35} = 3.05351170568562$$
$$x_{36} = 30$$
$$x_{37} = 3.45714285714286$$
$$x_{38} = 16$$
$$x_{39} = 68$$
$$x_{40} = 90$$
$$x_{41} = 38$$
$$x_{42} = 4.45454545454545$$
$$x_{43} = 3.0565371024735$$
$$x_{44} = 32$$
$$x_{45} = 70$$
$$x_{46} = 3.27118644067797$$
$$x_{47} = 64$$
$$x_{48} = 3.04719764011799$$
$$x_{49} = 3.04407713498623$$
$$x_{50} = 3.04134366925065$$
$$x_{51} = 8$$
$$x_{52} = 24$$
$$x_{53} = 3.09356725146199$$
$$x_{54} = 3.05079365079365$$
$$x_{55} = 62$$
$$x_{56} = 3.06374501992032$$
$$x_{57} = 3.07582938388626$$
$$x_{58} = 3.05818181818182$$
$$x_{59} = 18$$
$$x_{60} = 52$$
$$x_{61} = 3.59259259259259$$
$$x_{62} = 20$$
$$x_{63} = 96$$
$$x_{64} = 3.13008130081301$$
$$x_{65} = 10$$
$$x_{66} = 54$$
$$x_{67} = 3.16161616161616$$
$$x_{68} = 98$$
$$x_{69} = 3.13913043478261$$
$$x_{70} = 4$$
$$x_{71} = 3.04833836858006$$
$$x_{72} = 82$$
$$x_{73} = 56$$
$$x_{74} = 28$$
$$x_{75} = 40$$
$$x_{76} = 88$$
$$x_{77} = 94$$
$$x_{78} = 3.10884353741497$$
$$x_{79} = 3.04050632911392$$
$$x_{80} = 22$$
$$x_{81} = 84$$
$$x_{82} = 3.31372549019608$$
$$x_{83} = 3.12213740458015$$
$$x_{84} = 3.06584362139918$$
$$x_{85} = 92$$
$$x_{86} = 3.04507042253521$$
$$x_{87} = 3.05498281786942$$
$$x_{88} = 8.33333333333333$$
$$x_{89} = 76$$
$$x_{90} = 3.84210526315789$$
$$x_{91} = 6$$
$$x_{92} = 3.23880597014925$$
$$x_{93} = 3.37209302325581$$
$$x_{94} = 42$$
$$x_{95} = 3.0855614973262$$
$$x_{96} = 66$$
$$x_{97} = 3.04312668463612$$
$$x_{98} = 12$$
$$x_{99} = 100$$
$$x_{100} = 3.10322580645161$$