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$$\frac{\left(3 - 2 x\right) \left(x - 1\right) \operatorname{atan}{\left(\frac{1}{x} \right)}}{\left(\left(x^{2} - 3 x\right) + 2\right)^{2}} + \frac{\operatorname{atan}{\left(\frac{1}{x} \right)} - \frac{x - 1}{x^{2} \left(1 + \frac{1}{x^{2}}\right)}}{\left(x^{2} - 3 x\right) + 2} = 0$$
Resolvermos esta ecuaciónRaíces de esta ecuación
$$x_{1} = 19132.901290678$$
$$x_{2} = -31715.782844909$$
$$x_{3} = 22524.0604197956$$
$$x_{4} = -20695.5049116438$$
$$x_{5} = 26762.7395638698$$
$$x_{6} = 37782.6044575101$$
$$x_{7} = 41173.2218900857$$
$$x_{8} = -25781.934144489$$
$$x_{9} = 39477.9175405522$$
$$x_{10} = -34258.7965114625$$
$$x_{11} = 21676.2929417899$$
$$x_{12} = 27610.4506732461$$
$$x_{13} = 42020.871124463$$
$$x_{14} = -27477.346095126$$
$$x_{15} = -36801.7829103825$$
$$x_{16} = 32696.5989933765$$
$$x_{17} = 36934.9442594904$$
$$x_{18} = 40325.5707372207$$
$$x_{19} = -29172.7349491019$$
$$x_{20} = -13064.7511312679$$
$$x_{21} = 34391.9468419258$$
$$x_{22} = -39344.7472362699$$
$$x_{23} = -32563.4574828023$$
$$x_{24} = 16589.3264918846$$
$$x_{25} = 13197.4187357505$$
$$x_{26} = 15741.4117020698$$
$$x_{27} = -38497.0946483211$$
$$x_{28} = 31848.9194068878$$
$$x_{29} = 25915.0213145912$$
$$x_{30} = 28458.1552925966$$
$$x_{31} = 29305.8539952984$$
$$x_{32} = 23371.8157836424$$
$$x_{33} = 35239.6156571822$$
$$x_{34} = -30020.4219087624$$
$$x_{35} = 33544.2747081237$$
$$x_{36} = -30868.1044245516$$
$$x_{37} = -33411.1286201263$$
$$x_{38} = -14760.6707477129$$
$$x_{39} = 20828.5118341179$$
$$x_{40} = -41887.6934436303$$
$$x_{41} = 14045.4655779585$$
$$x_{42} = -37649.4399213803$$
$$x_{43} = -35106.4613873068$$
$$x_{44} = 25067.2951858459$$
$$x_{45} = 14893.4603458192$$
$$x_{46} = -18999.9363839473$$
$$x_{47} = 30153.5472891576$$
$$x_{48} = -24934.2180776959$$
$$x_{49} = 18285.0672504789$$
$$x_{50} = -18152.1278863196$$
$$x_{51} = -17304.3002060059$$
$$x_{52} = 36087.2813912772$$
$$x_{53} = -21543.2686222863$$
$$x_{54} = -23238.7621938086$$
$$x_{55} = 31001.235625517$$
$$x_{56} = -15608.5754127483$$
$$x_{57} = -41040.046516552$$
$$x_{58} = -35954.12345685$$
$$x_{59} = -40192.3978182678$$
$$x_{60} = -24086.4943643894$$
$$x_{61} = -19847.7280620064$$
$$x_{62} = 24219.5603323716$$
$$x_{63} = 17437.2101951941$$
$$x_{64} = -42735.3387032293$$
$$x_{65} = 38630.2621636119$$
$$x_{66} = -16456.4505171738$$
$$x_{67} = -12216.721901123$$
$$x_{68} = -28325.043156493$$
$$x_{69} = -13912.7314292036$$
$$x_{70} = -22391.0206365865$$
$$x_{71} = -26629.6432752343$$
$$x_{72} = 19980.7153178136$$
$$x_{73} = 12349.3086944618$$
Signos de extremos en los puntos:
(19132.90129067801, 2.73201914114813e-9)
(-31715.782844908965, 9.94080930629393e-10)
(22524.060419795554, 1.97126584340574e-9)
(-20695.504911643824, 2.33456504655437e-9)
(26762.739563869836, 1.39627615196543e-9)
(37782.604457510126, 7.00550110966409e-10)
(41173.22189008572, 5.89917650874476e-10)
(-25781.93414448899, 1.50430300059396e-9)
(39477.9175405522, 6.41672653614552e-10)
(-34258.79651146253, 8.51982044306463e-10)
(21676.292941789852, 2.12848233050144e-9)
(27610.450673246065, 1.31185087306286e-9)
(42020.87112446296, 5.66357385184307e-10)
(-27477.346095126024, 1.32439893203344e-9)
(-36801.78291038248, 7.38309880462269e-10)
(32696.59899337655, 9.35451776124229e-10)
(36934.944259490374, 7.33075358403515e-10)
(40325.57073722067, 6.14979295029748e-10)
(-29172.734949101923, 1.17494066314519e-9)
(-13064.751131267925, 5.85775546935869e-9)
(34391.94684192579, 8.45496344998119e-10)
(-39344.74723626989, 6.45958183965234e-10)
(-32563.457482802325, 9.43001330834122e-10)
(16589.326491884636, 3.63408308226448e-9)
(13197.418735750478, 5.74232576061641e-9)
(15741.411702069821, 4.0361549088701e-9)
(-38497.09464832114, 6.74716806952943e-10)
(31848.919406887762, 9.85911356411611e-10)
(25915.02131459115, 1.48912233357487e-9)
(28458.15529259655, 1.2348580369536e-9)
(29305.853995298414, 1.16445008370026e-9)
(23371.815783642378, 1.83084785758887e-9)
(35239.61565718223, 8.05308573002602e-10)
(-30020.421908762426, 1.10952600188143e-9)
(33544.27470812366, 8.88769377075685e-10)
(-30868.10442455163, 1.0494262915831e-9)
(-33411.12862012634, 8.95760094770639e-10)
(-14760.670747712868, 4.58911533456979e-9)
(20828.511834117886, 2.30528816593101e-9)
(-41887.69344363028, 5.69910123169637e-10)
(14045.465577958506, 5.06978527224611e-9)
(-37649.43992138033, 7.05439689234011e-10)
(-35106.461387306765, 8.1133674709857e-10)
(25067.295185845906, 1.59154785294615e-9)
(14893.460345819176, 4.50886359085526e-9)
(-18999.936383947294, 2.76981008975357e-9)
(30153.547289157617, 1.09989691975706e-9)
(-24934.218077695885, 1.60832443013563e-9)
(18285.067250478853, 2.99126149718981e-9)
(-18152.12788631959, 3.03456934614772e-9)
(-17304.300206005853, 3.33919457088177e-9)
(36087.28139127721, 7.67919573740742e-10)
(-21543.26862228632, 2.15445034881801e-9)
(-23238.762193808594, 1.85155510188769e-9)
(31001.235625516987, 1.04056690865846e-9)
(-15608.575412748307, 4.10409892781005e-9)
(-41040.04651655202, 5.93694666328046e-10)
(-35954.12345684996, 7.7353226186624e-10)
(-40192.397818267775, 6.1899986887773e-10)
(-24086.494364389437, 1.7235216707421e-9)
(-19847.728062006405, 2.5382514170452e-9)
(24219.56033237159, 1.70491744455607e-9)
(17437.21019519413, 3.28924186510581e-9)
(-42735.33870322935, 5.4752679147855e-10)
(38630.26216361191, 6.70142519606563e-10)
(-16456.45051717375, 3.69211215543147e-9)
(-12216.721901122954, 6.69914735818198e-9)
(-28325.043156493033, 1.24631601412484e-9)
(-13912.731429203583, 5.16550479816188e-9)
(-22391.020636586494, 1.99440534389897e-9)
(-26629.643275234255, 1.41005705594739e-9)
(19980.715317813643, 2.505078900208e-9)
(12349.308694461808, 6.55820587966886e-9)
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:
La función no tiene puntos mínimos
La función no tiene puntos máximos
Decrece en todo el eje numérico