Para hallar los extremos hay que resolver la ecuación
$$\frac{d}{d x} f{\left(x \right)} = 0$$
(la derivada es igual a cero),
y las raíces de esta ecuación serán los extremos de esta función:
$$\frac{d}{d x} f{\left(x \right)} = $$
primera derivada$$\sqrt[3]{2 x - 4} \cos{\left(x - 2 \right)} + \frac{2 \sin{\left(x - 2 \right)}}{3 \left(2 x - 4\right)^{\frac{2}{3}}} = 0$$
Resolvermos esta ecuaciónRaíces de esta ecuación
$$x_{1} = 50.7015304356439$$
$$x_{2} = -24.7160138193813$$
$$x_{3} = -2.78198250550805$$
$$x_{4} = -21.5760825825007$$
$$x_{5} = 47.5604096401108$$
$$x_{6} = -9.02579721195353$$
$$x_{7} = 3.75816416963352$$
$$x_{8} = -96.9635368192826$$
$$x_{9} = 25.5760825825007$$
$$x_{10} = 9.89617113713858$$
$$x_{11} = -49.8427084008599$$
$$x_{12} = 56.9839337405187$$
$$x_{13} = -52.9839337405187$$
$$x_{14} = -5.89617113713858$$
$$x_{15} = -100.105025842469$$
$$x_{16} = -30.9968245012648$$
$$x_{17} = 38.1375392732651$$
$$x_{18} = 75.8319420864438$$
$$x_{19} = -34.1375392732651$$
$$x_{20} = -46.7015304356439$$
$$x_{21} = 6.78198250550805$$
$$x_{22} = 19.2980272302257$$
$$x_{23} = 60.125198775959$$
$$x_{24} = 31.8562943368685$$
$$x_{25} = 85.2562090041342$$
$$x_{26} = -59.2664974027582$$
$$x_{27} = -68.6905500582828$$
$$x_{28} = 88.3976560839338$$
$$x_{29} = -87.5391133779695$$
$$x_{30} = -40.4193587091715$$
$$x_{31} = 13.0257972119535$$
$$x_{32} = -84.3976560839338$$
$$x_{33} = -37.2783943958661$$
$$x_{34} = 22.4366613593389$$
$$x_{35} = -90.6805798476945$$
$$x_{36} = -15.2980272302257$$
$$x_{37} = -172.360304022031$$
$$x_{38} = 82.1147733399832$$
$$x_{39} = -62.4078247070081$$
$$x_{40} = 63.2664974027582$$
$$x_{41} = -43.5604096401108$$
$$x_{42} = -27.8562943368685$$
$$x_{43} = 69.5491766886046$$
$$x_{44} = -56.125198775959$$
$$x_{45} = -74.9733504889854$$
$$x_{46} = 97.8220545907354$$
$$x_{47} = 28.7160138193813$$
$$x_{48} = 91.5391133779695$$
$$x_{49} = 94.6805798476945$$
$$x_{50} = 44.4193587091715$$
$$x_{51} = -65.5491766886046$$
$$x_{52} = -71.8319420864438$$
$$x_{53} = -93.8220545907354$$
$$x_{54} = 0.241835830366481$$
$$x_{55} = 78.9733504889854$$
$$x_{56} = 100.963536819283$$
$$x_{57} = 72.6905500582828$$
$$x_{58} = 41.2783943958661$$
$$x_{59} = 16.1607019176754$$
$$x_{60} = -18.4366613593389$$
$$x_{61} = 66.4078247070081$$
$$x_{62} = -78.1147733399832$$
$$x_{63} = 34.9968245012648$$
$$x_{64} = -81.2562090041342$$
$$x_{65} = -12.1607019176754$$
$$x_{66} = 53.8427084008599$$
Signos de extremos en los puntos:
(50.70153043564391, -4.60094840023217)
3 ____
(-24.71601381938132, -3.76617142241776*\/ -1 )
3 ____
(-2.78198250550805, 2.11751636732877*\/ -1 )
3 ____
(-21.576082582500682, 3.61235543965948*\/ -1 )
(47.560409640110784, 4.4998107488497)
3 ____
(-9.025797211953535, 2.80294744034641*\/ -1 )
(3.758164169633519, 1.49403735094339)
3 ____
(-96.96353681928255, 5.82772796577998*\/ -1 )
(25.576082582500682, -3.61235543965948)
(9.896171137138582, 2.50666072150975)
3 ____
(-49.8427084008599, -4.69782587582481*\/ -1 )
(56.98393374051865, -4.79086522786923)
3 ____
(-52.98393374051865, 4.79086522786923*\/ -1 )
3 ____
(-5.896171137138582, -2.50666072150975*\/ -1 )
3 ____
(-100.10502584246929, -5.88875370927104*\/ -1 )
3 ____
(-30.996824501264776, -4.04090420871427*\/ -1 )
(38.13753927326514, -4.16528174327594)
(75.83194208644383, -5.28551127081562)
3 ____
(-34.13753927326514, 4.16528174327594*\/ -1 )
3 ____
(-46.70153043564391, 4.60094840023217*\/ -1 )
(6.78198250550805, -2.11751636732877)
(19.298027230225653, -3.25782864995574)
(60.12519877595897, 4.88042535036865)
(31.85629433686848, -3.9083630709473)
(85.25620900413416, 5.50146973815723)
3 ____
(-59.26649740275822, 4.96681428624765*\/ -1 )
3 ____
(-68.69055005828281, -5.20945499780533*\/ -1 )
(88.39765608393375, -5.56981477820535)
3 ____
(-87.53911337796949, -5.63652259582256*\/ -1 )
3 ____
(-40.41935870917149, 4.39391134394341*\/ -1 )
(13.025797211953535, -2.80294744034641)
3 ____
(-84.39765608393375, 5.56981477820535*\/ -1 )
3 ____
(-37.27839439586613, -4.28264690418828*\/ -1 )
(22.436661359338938, 3.44420416170153)
3 ____
(-90.6805798476945, 5.70168784704502*\/ -1 )
3 ____
(-15.298027230225653, 3.25782864995574*\/ -1 )
3 ____
(-172.36030402203139, 7.03868847371344*\/ -1 )
(82.11477333998319, -5.43138317019364)
3 ____
(-62.407824707008096, -5.05029863583971*\/ -1 )
(63.26649740275822, -4.96681428624765)
3 ____
(-43.560409640110784, -4.4998107488497*\/ -1 )
3 ____
(-27.85629433686848, 3.9083630709473*\/ -1 )
(69.54917668860462, -5.13111085599349)
3 ____
(-56.12519877595897, -4.88042535036865*\/ -1 )
3 ____
(-74.97335048898539, -5.35943971291738*\/ -1 )
(97.82205459073536, 5.76539672482713)
(28.71601381938132, 3.76617142241776)
(91.53911337796949, 5.63652259582256)
(94.6805798476945, -5.70168784704502)
(44.41935870917149, -4.39391134394341)
3 ____
(-65.54917668860462, 5.13111085599349*\/ -1 )
3 ____
(-71.83194208644383, 5.28551127081562*\/ -1 )
3 ____
(-93.82205459073536, -5.76539672482713*\/ -1 )
3 ____
(0.24183583036648104, -1.49403735094339*\/ -1 )
(78.97335048898539, 5.35943971291738)
(100.96353681928255, -5.82772796577998)
(72.69055005828281, 5.20945499780533)
(41.27839439586613, 4.28264690418828)
(16.160701917675425, 3.04731936127991)
3 ____
(-18.436661359338938, -3.44420416170153*\/ -1 )
(66.40782470700809, 5.05029863583971)
3 ____
(-78.11477333998319, 5.43138317019364*\/ -1 )
(34.996824501264776, 4.04090420871427)
3 ____
(-81.25620900413416, -5.50146973815723*\/ -1 )
3 ____
(-12.160701917675425, -3.04731936127991*\/ -1 )
(53.8427084008599, 4.69782587582481)
Intervalos de crecimiento y decrecimiento de la función:Hallemos los intervalos donde la función crece y decrece y también los puntos mínimos y máximos de la función, para lo cual miramos cómo se comporta la función en los extremos con desviación mínima del extremo:
Puntos mínimos de la función:
$$x_{1} = 50.7015304356439$$
$$x_{2} = -24.7160138193813$$
$$x_{3} = 25.5760825825007$$
$$x_{4} = -49.8427084008599$$
$$x_{5} = 56.9839337405187$$
$$x_{6} = -5.89617113713858$$
$$x_{7} = -100.105025842469$$
$$x_{8} = -30.9968245012648$$
$$x_{9} = 38.1375392732651$$
$$x_{10} = 75.8319420864438$$
$$x_{11} = 6.78198250550805$$
$$x_{12} = 19.2980272302257$$
$$x_{13} = 31.8562943368685$$
$$x_{14} = -68.6905500582828$$
$$x_{15} = 88.3976560839338$$
$$x_{16} = -87.5391133779695$$
$$x_{17} = 13.0257972119535$$
$$x_{18} = -37.2783943958661$$
$$x_{19} = 82.1147733399832$$
$$x_{20} = -62.4078247070081$$
$$x_{21} = 63.2664974027582$$
$$x_{22} = -43.5604096401108$$
$$x_{23} = 69.5491766886046$$
$$x_{24} = -56.125198775959$$
$$x_{25} = -74.9733504889854$$
$$x_{26} = 94.6805798476945$$
$$x_{27} = 44.4193587091715$$
$$x_{28} = -93.8220545907354$$
$$x_{29} = 0.241835830366481$$
$$x_{30} = 100.963536819283$$
$$x_{31} = -18.4366613593389$$
$$x_{32} = -81.2562090041342$$
$$x_{33} = -12.1607019176754$$
Puntos máximos de la función:
$$x_{33} = 47.5604096401108$$
$$x_{33} = 3.75816416963352$$
$$x_{33} = 9.89617113713858$$
$$x_{33} = 60.125198775959$$
$$x_{33} = 85.2562090041342$$
$$x_{33} = 22.4366613593389$$
$$x_{33} = 97.8220545907354$$
$$x_{33} = 28.7160138193813$$
$$x_{33} = 91.5391133779695$$
$$x_{33} = 78.9733504889854$$
$$x_{33} = 72.6905500582828$$
$$x_{33} = 41.2783943958661$$
$$x_{33} = 16.1607019176754$$
$$x_{33} = 66.4078247070081$$
$$x_{33} = 34.9968245012648$$
$$x_{33} = 53.8427084008599$$
Decrece en los intervalos
$$\left[100.963536819283, \infty\right)$$
Crece en los intervalos
$$\left(-\infty, -100.105025842469\right]$$