El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\frac{\left(x^{2} - 4 x\right) + 4}{x - 1} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = 2$$
Solución numérica$$x_{1} = 2.0000004644826$$
$$x_{2} = 2.00000047153142$$
$$x_{3} = 2.00000036994737$$
$$x_{4} = 2.00000046978658$$
$$x_{5} = 2.00000046775901$$
$$x_{6} = 2.00000046461322$$
$$x_{7} = 2.00000047916709$$
$$x_{8} = 2.00000047498704$$
$$x_{9} = 2.00000049481285$$
$$x_{10} = 2.00000042877704$$
$$x_{11} = 2.00000045131131$$
$$x_{12} = 2.00000045434672$$
$$x_{13} = 2.0000004540357$$
$$x_{14} = 2.00000047088992$$
$$x_{15} = 2.00000044890513$$
$$x_{16} = 2.00000046435799$$
$$x_{17} = 2.00000045279651$$
$$x_{18} = 2.00000050140513$$
$$x_{19} = 2.00000100705804$$
$$x_{20} = 2.00000048999717$$
$$x_{21} = 2.00000046412524$$
$$x_{22} = 2.00000044973248$$
$$x_{23} = 2.00000044216563$$
$$x_{24} = 2.00000043510409$$
$$x_{25} = 2.00000045074848$$
$$x_{26} = 2.00000047304881$$
$$x_{27} = 2.00000045341512$$
$$x_{28} = 2.00000046714773$$
$$x_{29} = 2.00000041791077$$
$$x_{30} = 2.00000045243353$$
$$x_{31} = 2.00000045223582$$
$$x_{32} = 2.00000046381216$$
$$x_{33} = 2.00000045202598$$
$$x_{34} = 2.00000046930873$$
$$x_{35} = 2.00000045368084$$
$$x_{36} = 2.00000045009763$$
$$x_{37} = 2.00000045355118$$
$$x_{38} = 2.00000046391212$$
$$x_{39} = 2.00000045414382$$
$$x_{40} = 2.00000044843395$$
$$x_{41} = 2.0000004542474$$
$$x_{42} = 2.00000046593959$$
$$x_{43} = 2.00000045312185$$
$$x_{44} = 2.00000048632517$$
$$x_{45} = 2.00000044734716$$
$$x_{46} = 2.00000040891481$$
$$x_{47} = 2.00000031321749$$
$$x_{48} = 2.00000046574007$$
$$x_{49} = 2.00000039488476$$
$$x_{50} = 2.00000062061962$$
$$x_{51} = 2.00000046489434$$
$$x_{52} = 2.00000044671601$$
$$x_{53} = 2.00000043230946$$
$$x_{54} = 2.00000046555183$$
$$x_{55} = 2.00000043924486$$
$$x_{56} = 2.00000046537392$$
$$x_{57} = 2.00000047617277$$
$$x_{58} = 2.00000045156512$$
$$x_{59} = 2.00000045262012$$
$$x_{60} = 2.00000048109522$$
$$x_{61} = 2.00000044082137$$
$$x_{62} = 2.00000045180284$$
$$x_{63} = 2.00000045296351$$
$$x_{64} = 2.00000044332544$$
$$x_{65} = 2.000000464239$$
$$x_{66} = 2.00000047754941$$
$$x_{67} = 2.0000004647503$$
$$x_{68} = 2.00000043737024$$
$$x_{69} = 2.00000047224656$$
$$x_{70} = 2.00000055386291$$
$$x_{71} = 2.00000042417021$$
$$x_{72} = 2.00000044933635$$
$$x_{73} = 2.00000046661682$$
$$x_{74} = 2.00000044791696$$
$$x_{75} = 2.00000046401639$$
$$x_{76} = 2.00000045392272$$
$$x_{77} = 2.00000048343265$$
$$x_{78} = 2.0000004661514$$
$$x_{79} = 2.00000044601304$$
$$x_{80} = 2.00000047395508$$
$$x_{81} = 2.00000051097964$$
$$x_{82} = 2.00000046810072$$
$$x_{83} = 2.00000045444203$$
$$x_{84} = 2.00000046847041$$
$$x_{85} = 2$$
$$x_{86} = 2.00000052615216$$
$$x_{87} = 2.00000046520552$$
$$x_{88} = 2.00000046371625$$
$$x_{89} = 2.00000044522527$$
$$x_{90} = 2.00000046362414$$
$$x_{91} = 2.00000045327219$$
$$x_{92} = 2.00000047031124$$
$$x_{93} = 2.00000044433634$$
$$x_{94} = 2.00000045103974$$
$$x_{95} = 2.00000046744222$$
$$x_{96} = 2.0000004663767$$
$$x_{97} = 2.00000045380456$$
$$x_{98} = 2.00000046504588$$
$$x_{99} = 2.00000046887168$$
$$x_{100} = 2.0000004504353$$
$$x_{101} = 2.00000046687325$$