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$$\frac{2 \cdot 2^{\tan{\left(\frac{1}{x} \right)}} \left(\tan^{2}{\left(\frac{1}{x} \right)} + 1\right) \log{\left(2 \right)}}{x^{3}} + \frac{\left(\frac{2^{\tan{\left(\frac{1}{x} \right)}} \left(\tan^{2}{\left(\frac{1}{x} \right)} + 1\right)^{2} \log{\left(2 \right)}}{x^{2}} + \frac{2 \cdot 2^{\tan{\left(\frac{1}{x} \right)}} \left(\tan^{2}{\left(\frac{1}{x} \right)} + 1\right) \tan{\left(\frac{1}{x} \right)}}{x^{2}}\right) \log{\left(2 \right)}}{x^{2}} = 0$$
Resolvermos esta ecuaciónRaíces de esta ecuación
$$x_{1} = -39067.6584171538$$
$$x_{2} = -17873.8801175272$$
$$x_{3} = -36524.631648045$$
$$x_{4} = -14481.8604662586$$
$$x_{5} = 33819.7826109331$$
$$x_{6} = 41448.8551783791$$
$$x_{7} = 36362.836140754$$
$$x_{8} = -34829.2629698234$$
$$x_{9} = 20255.8241412147$$
$$x_{10} = -22961.0121748673$$
$$x_{11} = 30428.9825629182$$
$$x_{12} = -38219.9860145955$$
$$x_{13} = -11937.2357496865$$
$$x_{14} = -15329.9329405472$$
$$x_{15} = 21951.4716465977$$
$$x_{16} = -35676.9492263478$$
$$x_{17} = 23647.0569980702$$
$$x_{18} = -28895.3231923261$$
$$x_{19} = 15168.3045166377$$
$$x_{20} = -33133.8777656798$$
$$x_{21} = 12623.9862213672$$
$$x_{22} = 38058.1874193578$$
$$x_{23} = 37210.5133938134$$
$$x_{24} = 16016.3064105538$$
$$x_{25} = 34667.4710131928$$
$$x_{26} = -32286.1781462434$$
$$x_{27} = -33981.572589275$$
$$x_{28} = 28733.5489813285$$
$$x_{29} = -37372.3104976921$$
$$x_{30} = 24494.8303488932$$
$$x_{31} = 32972.0899197014$$
$$x_{32} = -16177.9555823299$$
$$x_{33} = 38905.8584267382$$
$$x_{34} = 27885.8220351653$$
$$x_{35} = -25504.350571189$$
$$x_{36} = 25342.5925195057$$
$$x_{37} = -17025.9359417344$$
$$x_{38} = 16864.2690523182$$
$$x_{39} = -42458.3206377312$$
$$x_{40} = -30590.7629115$$
$$x_{41} = 11775.7394239484$$
$$x_{42} = -18721.7930897542$$
$$x_{43} = -12785.5256247171$$
$$x_{44} = -40762.9946614184$$
$$x_{45} = 42296.5158784181$$
$$x_{46} = -23808.8042547312$$
$$x_{47} = -19569.6789649316$$
$$x_{48} = 35515.1554310102$$
$$x_{49} = 10927.3957918304$$
$$x_{50} = -26352.1072661198$$
$$x_{51} = 31276.6902887252$$
$$x_{52} = 29581.2689652079$$
$$x_{53} = -11088.8387470976$$
$$x_{54} = 19407.9720709725$$
$$x_{55} = 14320.2565527078$$
$$x_{56} = -31438.4733398092$$
$$x_{57} = -20417.5411594757$$
$$x_{58} = 13472.1540260145$$
$$x_{59} = -27199.8543666641$$
$$x_{60} = 26190.3445829336$$
$$x_{61} = -28047.5927507362$$
$$x_{62} = -41610.6588541307$$
$$x_{63} = 40601.1921376408$$
$$x_{64} = 17712.1979782402$$
$$x_{65} = 32124.3926031269$$
$$x_{66} = 39753.5266075844$$
$$x_{67} = -21265.3825387855$$
$$x_{68} = 27038.0874791692$$
$$x_{69} = -29743.0463764339$$
$$x_{70} = -13633.7286992225$$
$$x_{71} = -24656.5832819894$$
$$x_{72} = -22113.2055240003$$
$$x_{73} = 22799.2712365849$$
$$x_{74} = -39915.3279050928$$
$$x_{75} = 21103.6565858072$$
$$x_{76} = 18560.0977305743$$
Signos de extremos en los puntos:
(-39067.65841715385, -6.55175322580376e-10*log(2))
(-17873.88011752717, -3.1300082192859e-9*log(2))
(-36524.631648045, -7.49583587646228e-10*log(2))
(-14481.8604662586, -4.76793688626179e-9*log(2))
(33819.78261093313, -8.74313688778441e-10*log(2))
(41448.85517837911, -5.82079337853475e-10*log(2))
(36362.83614075396, -7.56297702325602e-10*log(2))
(-34829.26296982341, -8.24333194772517e-10*log(2))
(20255.824141214744, -2.43733388748569e-9*log(2))
(-22961.01217486728, -1.89672702695867e-9*log(2))
(30428.982562918234, -1.08002803939155e-9*log(2))
(-38219.98601459546, -6.84559302451684e-10*log(2))
(-11937.235749686479, -7.01725475638158e-9*log(2))
(-15329.932940547213, -4.25500284647943e-9*log(2))
(21951.47164659767, -2.07532650278892e-9*log(2))
(-35676.94922634775, -7.8562653224745e-10*log(2))
(23647.056998070173, -1.78837477096113e-9*log(2))
(-28895.323192326123, -1.19766255025449e-9*log(2))
(15168.30451663772, -4.34656091113087e-9*log(2))
(-33133.877765679834, -9.10848995304459e-10*log(2))
(12623.986221367211, -6.27524700213949e-9*log(2))
(38058.187419357775, -6.90417369876937e-10*log(2))
(37210.51339381339, -7.22232065410035e-10*log(2))
(16016.30641055375, -3.89846876873282e-9*log(2))
(34667.47101319284, -8.32078617002891e-10*log(2))
(-32286.17814624338, -9.59306526425124e-10*log(2))
(-33981.572589274976, -8.6597268894411e-10*log(2))
(28733.54898132851, -1.21124482917655e-9*log(2))
(-37372.31049769211, -7.15965422512604e-10*log(2))
(24494.830348893196, -1.6667229615161e-9*log(2))
(32972.0899197014, -9.19848234488342e-10*log(2))
(-16177.955582329947, -3.82062239346665e-9*log(2))
(38905.858426738225, -6.60659574701737e-10*log(2))
(27885.82203516527, -1.286008659059e-9*log(2))
(-25504.35057118902, -1.53730365183536e-9*log(2))
(25342.59251950569, -1.55707595340019e-9*log(2))
(-17025.935941734402, -3.44953321202712e-9*log(2))
(16864.269052318243, -3.51627479055187e-9*log(2))
(-42458.32063773121, -5.54711647923226e-10*log(2))
(-30590.762911499958, -1.06858615669695e-9*log(2))
(11775.73942394842, -7.21189164137294e-9*log(2))
(-18721.793089754203, -2.85291636186237e-9*log(2))
(-12785.525624717064, -6.11701131887376e-9*log(2))
(-40762.99466141836, -6.01811456904314e-10*log(2))
(42296.51587841815, -5.58982135616606e-10*log(2))
(-23808.80425473122, -1.76405527089948e-9*log(2))
(-19569.67896493164, -2.6110621915802e-9*log(2))
(35515.155431010186, -7.92831756099965e-10*log(2))
(10927.395791830375, -8.3751810604792e-9*log(2))
(-26352.10726611976, -1.43998470103868e-9*log(2))
(31276.69028872518, -1.02227571986115e-9*log(2))
(29581.268965207862, -1.14281669542792e-9*log(2))
(-11088.838747097638, -8.13206273431775e-9*log(2))
(19407.972070972497, -2.65494295845818e-9*log(2))
(14320.256552707784, -4.87662573518257e-9*log(2))
(-31438.473339809218, -1.0117367567927e-9*log(2))
(-20417.541159475677, -2.39871349165939e-9*log(2))
(13472.154026014547, -5.50995774244853e-9*log(2))
(-27199.85436666414, -1.35162362988524e-9*log(2))
(26190.344582933587, -1.45790447738336e-9*log(2))
(-28047.592750736196, -1.27115374704333e-9*log(2))
(-41610.65885413072, -5.77542011428464e-10*log(2))
(40601.192137640835, -6.06638324415454e-10*log(2))
(17712.197978240172, -3.18766064926546e-9*log(2))
(32124.392603126922, -9.69035129342657e-10*log(2))
(39753.52660758443, -6.32785106946497e-10*log(2))
(-21265.3825387855, -2.2112581468443e-9*log(2))
(27038.08747916922, -1.36791526651392e-9*log(2))
(-29743.04637643389, -1.13036573172179e-9*log(2))
(-13633.728699222513, -5.37958318324219e-9*log(2))
(-24656.583281989446, -1.64483372220801e-9*log(2))
(-22113.20552400033, -2.04495136219567e-9*log(2))
(22799.271236584867, -1.92385029273259e-9*log(2))
(-39915.32790509279, -6.27643529333553e-10*log(2))
(21103.656585807224, -2.24542649660349e-9*log(2))
(18560.09773057432, -2.90305793556843e-9*log(2))
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