Hallemos los puntos de flexiones, para eso hay que resolver la ecuación
$$\frac{d^{2}}{d x^{2}} f{\left(x \right)} = 0$$
(la segunda derivada es igual a cero),
las raíces de la ecuación obtenida serán los puntos de flexión para el gráfico de la función indicado:
$$\frac{d^{2}}{d x^{2}} f{\left(x \right)} = $$
segunda derivada$$\frac{2 \left(\frac{2 \operatorname{sign}{\left(x - 1 \right)}}{\left(x - 1\right) \sqrt[3]{\left|{x - 1}\right|}} - \frac{3 \left|{x - 1}\right|^{\frac{2}{3}}}{\left(x - 1\right)^{2}} - \frac{2 \operatorname{sign}{\left(x - 2 \right)}}{\left(x - 2\right) \sqrt[3]{\left|{x - 2}\right|}} + \frac{3 \left|{x - 2}\right|^{\frac{2}{3}}}{\left(x - 2\right)^{2}}\right)}{9} = 0$$
Resolvermos esta ecuaciónRaíces de esta ecuación
$$x_{1} = 95304.0268252043$$
$$x_{2} = -103791.362192748$$
$$x_{3} = -129133.055363848$$
$$x_{4} = -183435.782860475$$
$$x_{5} = -74828.6242703155$$
$$x_{6} = 106164.887247276$$
$$x_{7} = -85689.802224819$$
$$x_{8} = 160468.073230856$$
$$x_{9} = 113405.402368939$$
$$x_{10} = -114652.140240002$$
$$x_{11} = -136373.473042397$$
$$x_{12} = -132753.267073585$$
$$x_{13} = -92930.4749233495$$
$$x_{14} = 149607.530835116$$
$$x_{15} = -168955.129307482$$
$$x_{16} = 109785.149885881$$
$$x_{17} = -158094.610380195$$
$$x_{18} = -121892.612675662$$
$$x_{19} = -147234.060737799$$
$$x_{20} = -111031.891048395$$
$$x_{21} = -176195.460999757$$
$$x_{22} = -179815.623084838$$
$$x_{23} = -107411.632041635$$
$$x_{24} = -154474.430898759$$
$$x_{25} = 77202.2491018338$$
$$x_{26} = -118272.380517698$$
$$x_{27} = 84443.0250051142$$
$$x_{28} = 117025.645638938$$
$$x_{29} = -165334.959370894$$
$$x_{30} = -125512.837416453$$
$$x_{31} = 131506.541805723$$
$$x_{32} = 127886.327994658$$
$$x_{33} = 91683.7110774952$$
$$x_{34} = 164088.247214284$$
$$x_{35} = 153227.715282796$$
$$x_{36} = 138746.952169846$$
$$x_{37} = -96550.7850906174$$
$$x_{38} = 178568.914598841$$
$$x_{39} = -161714.786463164$$
$$x_{40} = 88063.377885336$$
$$x_{41} = 120645.880525241$$
$$x_{42} = -78449.0435994471$$
$$x_{43} = 142367.149600594$$
$$x_{44} = 135126.749709999$$
$$x_{45} = 102544.61337754$$
$$x_{46} = -143613.869493746$$
$$x_{47} = 98924.3270436442$$
$$x_{48} = -89310.1480088897$$
$$x_{49} = 124266.107760565$$
$$x_{50} = -82069.4350742536$$
$$x_{51} = -150854.2477742$$
$$x_{52} = -139993.673715634$$
$$x_{53} = 171328.586254447$$
$$x_{54} = 80822.6497912284$$
$$x_{55} = -172575.296459901$$
$$x_{56} = 145987.342376377$$
$$x_{57} = 167708.418157916$$
$$x_{58} = -100171.080326311$$
$$x_{59} = 174948.751680618$$
$$x_{60} = 156847.895997152$$
Intervalos de convexidad y concavidad:Hallemos los intervales donde la función es convexa o cóncava, para eso veamos cómo se comporta la función en los puntos de flexiones:
Cóncava en los intervalos
$$\left[174948.751680618, \infty\right)$$
Convexa en los intervalos
$$\left(-\infty, -147234.060737799\right]$$