El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\frac{4 \left(x - 1\right)^{2}}{7 - 4 x} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = 1$$
Solución numérica$$x_{1} = 0.999999652225466$$
$$x_{2} = 0.99999972761764$$
$$x_{3} = 0.999999665785116$$
$$x_{4} = 0.999999819216426$$
$$x_{5} = 0.99999965988841$$
$$x_{6} = 0.999999651421075$$
$$x_{7} = 0.999999658341978$$
$$x_{8} = 0.99999966887453$$
$$x_{9} = 0.999999597029377$$
$$x_{10} = 0.999999652484453$$
$$x_{11} = 0.999999658455057$$
$$x_{12} = 0.99999964772707$$
$$x_{13} = 0.99999966017957$$
$$x_{14} = 0.999999649304945$$
$$x_{15} = 0.999999651686586$$
$$x_{16} = 0.999999651117906$$
$$x_{17} = 0.999999653017479$$
$$x_{18} = 0.999999650131315$$
$$x_{19} = 0.999999663869136$$
$$x_{20} = 0.999999548089468$$
$$x_{21} = 0.999999652402529$$
$$x_{22} = 0.999999660340861$$
$$x_{23} = 0.999999644170025$$
$$x_{24} = 0.999999647202855$$
$$x_{25} = 0.9999996585153$$
$$x_{26} = 0.999999648602696$$
$$x_{27} = 0.999999660902788$$
$$x_{28} = 0.99999965920483$$
$$x_{29} = 0.99999965963276$$
$$x_{30} = 0.999999652129599$$
$$x_{31} = 0.999999658860814$$
$$x_{32} = 0.999999651558086$$
$$x_{33} = 0.999999646604816$$
$$x_{34} = 0.999999658237804$$
$$x_{35} = 0.999999652775084$$
$$x_{36} = 0.999999682612114$$
$$x_{37} = 0.999999645114655$$
$$x_{38} = 0.999999652636655$$
$$x_{39} = 0.999999643040197$$
$$x_{40} = 0.999999652960732$$
$$x_{41} = 0.999999658578232$$
$$x_{42} = 0.999999649880673$$
$$x_{43} = 0.999999662217788$$
$$x_{44} = 0.999999661904204$$
$$x_{45} = 0.999999639953958$$
$$x_{46} = 0.999999637767964$$
$$x_{47} = 0.999999659302847$$
$$x_{48} = 0.999999664421473$$
$$x_{49} = 0.999999634876906$$
$$x_{50} = 0.999999650768454$$
$$x_{51} = 0.999999661619394$$
$$x_{52} = 0.999999660029104$$
$$x_{53} = 0.999999652316315$$
$$x_{54} = 0.999999651807347$$
$$x_{55} = 0.999999670372609$$
$$x_{56} = 0.999999661121581$$
$$x_{57} = 0.999999645916175$$
$$x_{58} = 0.99999966051419$$
$$x_{59} = 0.999999650949603$$
$$x_{60} = 0.999999641664787$$
$$x_{61} = 0.999999662564737$$
$$x_{62} = 0.999999648972106$$
$$x_{63} = 0.999999652839705$$
$$x_{64} = 0.999999659516281$$
$$x_{65} = 0.999999658644039$$
$$x_{66} = 0.999999652707472$$
$$x_{67} = 0.999999652028284$$
$$x_{68} = 0.999999651274681$$
$$x_{69} = 0.999999649606386$$
$$x_{70} = 0.999999650572929$$
$$x_{71} = 0.999999658397335$$
$$x_{72} = 0.999999661359569$$
$$x_{73} = 0.999999663382565$$
$$x_{74} = 0.999999648190334$$
$$x_{75} = 0.999999672254989$$
$$x_{76} = 0.999999615363243$$
$$x_{77} = 0.99999965871292$$
$$x_{78} = 0.999999665053876$$
$$x_{79} = 0.999999666640329$$
$$x_{80} = 0.999999677968366$$
$$x_{81} = 0.999999652562401$$
$$x_{82} = 0.999999659112$$
$$x_{83} = 0.999999660700958$$
$$x_{84} = 0.999999630874037$$
$$x_{85} = 0.999999667653962$$
$$x_{86} = 0.999999652901528$$
$$x_{87} = 0.999999650361246$$
$$x_{88} = 0.999999659023955$$
$$x_{89} = 0.999999659406497$$
$$x_{90} = 0.999999674691324$$
$$x_{91} = 0.999999659756565$$
$$x_{92} = 0.999999658288845$$
$$x_{93} = 0.999999658785098$$
$$x_{94} = 0.999999658940335$$
$$x_{95} = 0.999999651921045$$
$$x_{96} = 0.999999689703183$$
$$x_{97} = 0.999999624965194$$
$$x_{98} = 0.99999965307192$$
$$x_{99} = 0.999999701870203$$
$$x_{100} = 0.999999662950674$$